Version: v0.6.5 Latest Latest

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Published: Feb 7, 2017 License: MPL-2.0 Imports: 22 Imported by: 0




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const WALPrefix = "wal/"

WALPrefix is the prefix within Storage where WAL entries will be written.


This section is empty.


func DeleteWAL

func DeleteWAL(s logical.Storage, id string) error

DeleteWAL commits the WAL entry with the given ID. Once committed, it is assumed that the operation was a success and doesn't need to be rolled back.

func GenericNameRegex added in v0.3.0

func GenericNameRegex(name string) string

Helper which returns a generic regex string for creating endpoint patterns that are identified by the given name in the backends

func ListWAL

func ListWAL(s logical.Storage) ([]string, error)

ListWAL lists all the entries in the WAL.

func OptionalParamRegex added in v0.5.2

func OptionalParamRegex(name string) string

Helper which returns a regex string for optionally accepting the a field from the API URL

func PutWAL

func PutWAL(s logical.Storage, kind string, data interface{}) (string, error)

PutWAL writes some data to the WAL.

The kind parameter is used by the framework to allow users to store multiple kinds of WAL data and to easily disambiguate what data they're expecting.

Data within the WAL that is uncommitted (CommitWAL hasn't be called) will be given to the rollback callback when an rollback operation is received, allowing the backend to clean up some partial states.

The data must be JSON encodable.

This returns a unique ID that can be used to reference this WAL data. WAL data cannot be modified. You can only add to the WAL and commit existing WAL entries.

func TestBackendRoutes added in v0.1.1

func TestBackendRoutes(t *testing.T, b *Backend, rs []string)

TestBackendRoutes is a helper to test that all the given routes will route properly in the backend.


type Backend

type Backend struct {
	// Help is the help text that is shown when a help request is made
	// on the root of this resource. The root help is special since we
	// show all the paths that can be requested.
	Help string

	// Paths are the various routes that the backend responds to.
	// This cannot be modified after construction (i.e. dynamically changing
	// paths, including adding or removing, is not allowed once the
	// backend is in use).
	// PathsSpecial is the list of path patterns that denote the
	// paths above that require special privileges. These can't be
	// regular expressions, it is either exact match or prefix match.
	// For prefix match, append '*' as a suffix.
	Paths        []*Path
	PathsSpecial *logical.Paths

	// Secrets is the list of secret types that this backend can
	// return. It is used to automatically generate proper responses,
	// and ease specifying callbacks for revocation, renewal, etc.
	Secrets []*Secret

	// PeriodicFunc is the callback, which if set, will be invoked when the
	// periodic timer of RollbackManager ticks. This can be used by
	// backends to do anything it wishes to do periodically.
	// PeriodicFunc can be invoked to, say to periodically delete stale
	// entries in backend's storage, while the backend is still being used.
	// (Note the different of this action from what `Clean` does, which is
	// invoked just before the backend is unmounted).
	PeriodicFunc periodicFunc

	// WALRollback is called when a WAL entry (see wal.go) has to be rolled
	// back. It is called with the data from the entry.
	// WALRollbackMinAge is the minimum age of a WAL entry before it is attempted
	// to be rolled back. This should be longer than the maximum time it takes
	// to successfully create a secret.
	WALRollback       WALRollbackFunc
	WALRollbackMinAge time.Duration

	// Clean is called on unload to clean up e.g any existing connections
	// to the backend, if required.
	Clean CleanupFunc

	// Initialize is called after a backend is created. Storage should not be
	// written to before this function is called.
	Init InitializeFunc

	// Invalidate is called when a keys is modified if required
	Invalidate InvalidateFunc

	// AuthRenew is the callback to call when a RenewRequest for an
	// authentication comes in. By default, renewal won't be allowed.
	// See the built-in AuthRenew helpers in lease.go for common callbacks.
	AuthRenew OperationFunc
	// contains filtered or unexported fields

Backend is an implementation of logical.Backend that allows the implementer to code a backend using a much more programmer-friendly framework that handles a lot of the routing and validation for you.

This is recommended over implementing logical.Backend directly.

func (*Backend) Cleanup added in v0.3.0

func (b *Backend) Cleanup()

Cleanup is used to release resources and prepare to stop the backend

func (*Backend) HandleExistenceCheck added in v0.5.0

func (b *Backend) HandleExistenceCheck(req *logical.Request) (checkFound bool, exists bool, err error)

func (*Backend) HandleRequest

func (b *Backend) HandleRequest(req *logical.Request) (*logical.Response, error)

logical.Backend impl.

func (*Backend) Initialize added in v0.6.5

func (b *Backend) Initialize() error

func (*Backend) InvalidateKey added in v0.6.5

func (b *Backend) InvalidateKey(key string)

InvalidateKey is used to clear caches and reset internal state on key changes

func (*Backend) Logger

func (b *Backend) Logger() log.Logger

Logger can be used to get the logger. If no logger has been set, the logs will be discarded.

func (*Backend) Route

func (b *Backend) Route(path string) *Path

Route looks up the path that would be used for a given path string.

func (*Backend) SanitizeTTL added in v0.3.0

func (b *Backend) SanitizeTTL(ttl, maxTTL time.Duration) (time.Duration, time.Duration, error)

Caps the boundaries of ttl and max_ttl values to the backend mount's max_ttl value.

func (*Backend) SanitizeTTLStr added in v0.6.0

func (b *Backend) SanitizeTTLStr(ttlStr, maxTTLStr string) (ttl, maxTTL time.Duration, err error)

This method takes in the TTL and MaxTTL values provided by the user, compares those with the SystemView values. If they are empty a value of 0 is set, which will cause initial secret or LeaseExtend operations to use the mount/system defaults. If they are set, their boundaries are validated.

func (*Backend) Secret

func (b *Backend) Secret(k string) *Secret

Secret is used to look up the secret with the given type.

func (*Backend) Setup added in v0.2.0

func (b *Backend) Setup(config *logical.BackendConfig) (logical.Backend, error)

Setup is used to initialize the backend with the initial backend configuration

func (*Backend) SpecialPaths

func (b *Backend) SpecialPaths() *logical.Paths

logical.Backend impl.

func (*Backend) System added in v0.3.0

func (b *Backend) System() logical.SystemView

type CleanupFunc added in v0.3.0

type CleanupFunc func()

CleanupFunc is the callback for backend unload.

type FieldData

type FieldData struct {
	Raw    map[string]interface{}
	Schema map[string]*FieldSchema

FieldData is the structure passed to the callback to handle a path containing the populated parameters for fields. This should be used instead of the raw (*vault.Request).Data to access data in a type-safe way.

func (*FieldData) Get

func (d *FieldData) Get(k string) interface{}

Get gets the value for the given field. If the key is an invalid field, FieldData will panic. If you want a safer version of this method, use GetOk. If the field k is not set, the default value (if set) will be returned, otherwise the zero value will be returned.

func (*FieldData) GetDefaultOrZero added in v0.6.0

func (d *FieldData) GetDefaultOrZero(k string) interface{}

GetDefaultOrZero gets the default value set on the schema for the given field. If there is no default value set, the zero value of the type will be returned.

func (*FieldData) GetOk

func (d *FieldData) GetOk(k string) (interface{}, bool)

GetOk gets the value for the given field. The second return value will be false if the key is invalid or the key is not set at all.

func (*FieldData) GetOkErr

func (d *FieldData) GetOkErr(k string) (interface{}, bool, error)

GetOkErr is the most conservative of all the Get methods. It returns whether key is set or not, but also an error value. The error value is non-nil if the field doesn't exist or there was an error parsing the field value.

func (*FieldData) Validate added in v0.3.0

func (d *FieldData) Validate() error

Cycle through raw data and validate conversions in the schema, so we don't get an error/panic later when trying to get data out. Data not in the schema is not an error at this point, so we don't worry about it.

type FieldSchema

type FieldSchema struct {
	Type        FieldType
	Default     interface{}
	Description string

FieldSchema is a basic schema to describe the format of a path field.

func (*FieldSchema) DefaultOrZero

func (s *FieldSchema) DefaultOrZero() interface{}

DefaultOrZero returns the default value if it is set, or otherwise the zero value of the type.

type FieldType

type FieldType uint

FieldType is the enum of types that a field can be.

const (
	TypeInvalid FieldType = 0
	TypeString  FieldType = iota

	// TypeDurationSecond represent as seconds, this can be either an
	// integer or go duration format string (e.g. 24h)

func (FieldType) String

func (t FieldType) String() string

func (FieldType) Zero

func (t FieldType) Zero() interface{}

type InitializeFunc added in v0.6.5

type InitializeFunc func() error

InitializeFunc is the callback for backend creation.

type InvalidateFunc added in v0.6.5

type InvalidateFunc func(string)

InvalidateFunc is the callback for backend key invalidation.

type OperationFunc

type OperationFunc func(*logical.Request, *FieldData) (*logical.Response, error)

OperationFunc is the callback called for an operation on a path.

func LeaseExtend

func LeaseExtend(backendIncrement, backendMax time.Duration, systemView logical.SystemView) OperationFunc

LeaseExtend returns an OperationFunc that can be used to simply extend the lease of the auth/secret for the duration that was requested.

backendIncrement is the backend's requested increment -- perhaps from a user request, perhaps from a role/config value. If not set, uses the mount/system value.

backendMax is the backend's requested increment -- this can be more restrictive than the mount/system value but not less.

systemView is the system view from the calling backend, used to determine and/or correct default/max times.

type Path

type Path struct {
	// Pattern is the pattern of the URL that matches this path.
	// This should be a valid regular expression. Named captures will be
	// exposed as fields that should map to a schema in Fields. If a named
	// capture is not a field in the Fields map, then it will be ignored.
	Pattern string

	// Fields is the mapping of data fields to a schema describing that
	// field. Named captures in the Pattern also map to fields. If a named
	// capture name matches a PUT body name, the named capture takes
	// priority.
	// Note that only named capture fields are available in every operation,
	// whereas all fields are available in the Write operation.
	Fields map[string]*FieldSchema

	// Callbacks are the set of callbacks that are called for a given
	// operation. If a callback for a specific operation is not present,
	// then logical.ErrUnsupportedOperation is automatically generated.
	// The help operation is the only operation that the Path will
	// automatically handle if the Help field is set. If both the Help
	// field is set and there is a callback registered here, then the
	// callback will be called.
	Callbacks map[logical.Operation]OperationFunc

	// ExistenceCheck, if implemented, is used to query whether a given
	// resource exists or not. This is used for ACL purposes: if an Update
	// action is specified, and the existence check returns false, the action
	// is not allowed since the resource must first be created. The reverse is
	// also true. If not specified, the Update action is forced and the user
	// must have UpdateCapability on the path.
	ExistenceCheck func(*logical.Request, *FieldData) (bool, error)

	// Help is text describing how to use this path. This will be used
	// to auto-generate the help operation. The Path will automatically
	// generate a parameter listing and URL structure based on the
	// regular expression, so the help text should just contain a description
	// of what happens.
	// HelpSynopsis is a one-sentence description of the path. This will
	// be automatically line-wrapped at 80 characters.
	// HelpDescription is a long-form description of the path. This will
	// be automatically line-wrapped at 80 characters.
	HelpSynopsis    string
	HelpDescription string

Path is a single path that the backend responds to.

func PathAppend

func PathAppend(paths ...[]*Path) []*Path

PathAppend is a helper for appending lists of paths into a single list.

type PathMap

type PathMap struct {
	Prefix        string
	Name          string
	Schema        map[string]*FieldSchema
	CaseSensitive bool
	Salt          *salt.Salt
	// contains filtered or unexported fields

PathMap can be used to generate a path that stores mappings in the storage. It is a structure that also exports functions for querying the mappings.

The primary use case for this is for credential providers to do their mapping to policies.

func (*PathMap) Delete added in v0.2.0

func (p *PathMap) Delete(s logical.Storage, k string) error

Delete removes a value from the mapping

func (*PathMap) Get

func (p *PathMap) Get(s logical.Storage, k string) (map[string]interface{}, error)

Get reads a value out of the mapping

func (*PathMap) List

func (p *PathMap) List(s logical.Storage, prefix string) ([]string, error)

List reads the keys under a given path

func (*PathMap) Paths

func (p *PathMap) Paths() []*Path

Paths are the paths to append to the Backend paths.

func (*PathMap) Put

func (p *PathMap) Put(s logical.Storage, k string, v map[string]interface{}) error

Put writes a value into the mapping

type PathStruct

type PathStruct struct {
	Name            string
	Path            string
	Schema          map[string]*FieldSchema
	HelpSynopsis    string
	HelpDescription string

	Read bool

PathStruct can be used to generate a path that stores a struct in the storage. This structure is a map[string]interface{} but the types are set according to the schema in this structure.

func (*PathStruct) Delete added in v0.2.0

func (p *PathStruct) Delete(s logical.Storage) error

Delete removes the structure.

func (*PathStruct) Get

func (p *PathStruct) Get(s logical.Storage) (map[string]interface{}, error)

Get reads the structure.

func (*PathStruct) Paths

func (p *PathStruct) Paths() []*Path

Paths are the paths to append to the Backend paths.

func (*PathStruct) Put

func (p *PathStruct) Put(s logical.Storage, v map[string]interface{}) error

Put writes the structure.

type PolicyMap

type PolicyMap struct {

	DefaultKey string
	PolicyKey  string

PolicyMap is a specialization of PathMap that expects the values to be lists of policies. This assists in querying and loading policies from the PathMap.

func (*PolicyMap) Policies

func (p *PolicyMap) Policies(s logical.Storage, names ...string) ([]string, error)

type Secret

type Secret struct {
	// Type is the name of this secret type. This is used to setup the
	// vault ID and to look up the proper secret structure when revocation/
	// renewal happens. Once this is set this should not be changed.
	// The format of this must match (case insensitive): ^a-Z0-9_$
	Type string

	// Fields is the mapping of data fields and schema that comprise
	// the structure of this secret.
	Fields map[string]*FieldSchema

	// DefaultDuration is the default value for the duration of the lease for
	// this secret. This can be manually overwritten with the result of
	// Response().
	// If these aren't set, Vault core will set a default lease period which
	// may come from a mount tuning.
	DefaultDuration time.Duration

	// Renew is the callback called to renew this secret. If Renew is
	// not specified then renewable is set to false in the secret.
	// See lease.go for helpers for this value.
	Renew OperationFunc

	// Revoke is the callback called to revoke this secret. This is required.
	Revoke OperationFunc

Secret is a type of secret that can be returned from a backend.

func (*Secret) HandleRenew

func (s *Secret) HandleRenew(req *logical.Request) (*logical.Response, error)

HandleRenew is the request handler for renewing this secret.

func (*Secret) HandleRevoke

func (s *Secret) HandleRevoke(req *logical.Request) (*logical.Response, error)

HandleRevoke is the request handler for renewing this secret.

func (*Secret) Renewable

func (s *Secret) Renewable() bool

func (*Secret) Response

func (s *Secret) Response(
	data, internal map[string]interface{}) *logical.Response

type WALEntry

type WALEntry struct {
	ID        string      `json:"-"`
	Kind      string      `json:"type"`
	Data      interface{} `json:"data"`
	CreatedAt int64       `json:"created_at"`

func GetWAL

func GetWAL(s logical.Storage, id string) (*WALEntry, error)

GetWAL reads a specific entry from the WAL. If the entry doesn't exist, then nil value is returned.

The kind, value, and error are returned.

type WALRollbackFunc added in v0.6.0

type WALRollbackFunc func(*logical.Request, string, interface{}) error

WALRollbackFunc is the callback for rollbacks.

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