fosite

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 Go to latest Published: May 20, 2018 License: Apache-2.0 Imports: 14 Imported by: 0

README

ORY Fosite - Security-first OAuth2 framework

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The security first OAuth2 & OpenID Connect framework for Go. Built simple, powerful and extensible. This library implements peer-reviewed IETF RFC6749, counterfeits weaknesses covered in peer-reviewed IETF RFC6819 and countermeasures various database attack scenarios, keeping your application safe when that hacker penetrates or leaks your database. OpenID Connect is implemented according to OpenID Connect Core 1.0 incorporating errata set 1 and includes all flows: code, implicit, hybrid.

This library considered and implemented:

OAuth2 and OpenID Connect are difficult protocols. If you want quick wins, we strongly encourage you to look at Hydra. Hydra is a secure, high performance, cloud native OAuth2 and OpenID Connect service that integrates with every authentication method imaginable and is built on top of Fosite.

Table of Contents

Motivation

Fosite was written because our OAuth2 and OpenID Connect service Hydra required a secure and extensible OAuth2 library. We had to realize that nothing matching our requirements was out there, so we decided to build it ourselves.

API Stability

The core public API is almost stable as most changes will only touch the inner workings.

We strongly encourage vendoring fosite using dep or comparable tools.

Example

The example does not have nice visuals but it should give you an idea of what you can do with Fosite and a few lines of code.

Authorize Code Grant

You can run this minimalistic example by doing

go get github.com/ory/fosite-example
cd $GOPATH/src/github.com/ory/fosite-example
dep ensure
go install github.com/ory/fosite-example
fosite-example

There should be a server listening on localhost:3846. You can check out the example's source code here.

A word on quality

We tried to set up as many tests as possible and test for as many cases covered in the RFCs as possible. But we are only human. Please, feel free to add tests for the various cases defined in the OAuth2 RFCs 6749 and 6819 or any other cases that improve the tests.

Everyone writing an RFC conform test that breaks with the current implementation, will receive a place in the Hall of Fame!

A word on security

Please be aware that Fosite only secures parts your server side security. You still need to secure your apps and clients, keep your tokens safe, prevent CSRF attacks, ensure database security, use valid and strong TLS certificates and much more. If you need any help or advice feel free to contact our security staff through our website!

We have given the various specifications, especially OAuth 2.0 Threat Model and Security Considerations, a very close look and included everything we thought was in the scope of this framework. Here is a complete list of things we implemented in Fosite:

Additionally, we added these safeguards:

  • Enforcing random states: Without a random-looking state or OpenID Connect nonce the request will fail.
  • Advanced Token Validation: Tokens are layouted as <key>.<signature> where <signature> is created using HMAC-SHA256 using a global secret. This is what a token can look like: /tgBeUhWlAT8tM8Bhmnx+Amf8rOYOUhrDi3pGzmjP7c=.BiV/Yhma+5moTP46anxMT6cWW8gz5R5vpC9RbpwSDdM=

Sections below Section 5 that are not covered in the list above should be reviewed by you. If you think that a specific section should be something that is covered in Fosite, feel free to create an issue. Please be aware that OpenID Connect requires specific knowledge of the identity provider, which is why Fosite only implements core requirements and most things must be implemented by you (for example prompt, max_age, ui_locales, id_token_hint, user authentication, session management, ...).

It is strongly encouraged to use the handlers shipped with Fosite as they follow the specs and are well tested.

A word on extensibility

Fosite is extensible ... because OAuth2 is an extensible and flexible framework. Fosite let's you register custom token and authorize endpoint handlers with the security that the requests have been validated against the OAuth2 specs beforehand. You can easily extend Fosite's capabilities. For example, if you want to provide OpenID Connect on top of your OAuth2 stack, that's no problem. Or custom assertions, what ever you like and as long as it is secure. ;)

Installation

Go 1.5+ must be installed on your system and it is required that you have set up your GOPATH environment variable.

go get -d github.com/ory/fosite

We recommend to use dep to mitigate compatibility breaks that come with new api versions.

Documentation

There is an API documentation available at godoc.org/ory/fosite.

Scopes

Fosite has two strategies for matching scopes. You can replace the default scope strategy if you need a custom one by implementing fosite.ScopeStrategy.

Using the composer, setting a strategy is easy:

import "github.com/ory/fosite/compose"

var config = &compose.Config{
    ScopeStrategy: fosite.HierarchicScopeStrategy,
}

Note: To issue refresh tokens with any of the grants, you need to include the offline scope in the OAuth2 request.

fosite.WildcardScopeStrategy

This is the default strategy, and the safest one. It is best explained by looking at some examples:

  • users.* matches users.read
  • users.* matches users.read.foo
  • users.read matches users.read
  • users does not match users.read
  • users.read.* does not match users.read
  • users.*.* does not match users.read
  • users.*.* matches users.read.own
  • users.*.* matches users.read.own.other
  • users.read.* matches users.read.own
  • users.read.* matches users.read.own.other
  • users.write.* does not match users.read.own
  • users.*.bar matches users.bar.baz
  • users.*.bar does not users.baz.baz.bar

To request users.*, a client must have exactly users.* as granted scope.

fosite.HierarchicScopeStrategy

This strategy is deprecated, use it with care. Again, it is best explained by looking at some examples:

  • users matches users
  • users matches users.read
  • users matches users.read.own
  • users.read matches users.read
  • users.read matches users.read.own
  • users.read does not match users.write
  • users.read does not match users.write.own

Quickstart

Instantiating fosite by hand can be painful. Therefore we created a few convenience helpers available through the compose package. It is strongly encouraged to use these well tested composers.

In this very basic example, we will instantiate fosite with all OpenID Connect and OAuth2 handlers enabled. Please refer to the example app for more details.

This little code snippet sets up a full-blown OAuth2 and OpenID Connect example.

import "github.com/ory/fosite"
import "github.com/ory/fosite/compose"
import "github.com/ory/fosite/storage"

// This is the example storage that contains:
// * an OAuth2 Client with id "my-client" and secret "foobar" capable of all oauth2 and open id connect grant and response types.
// * a User for the resource owner password credentials grant type with usename "peter" and password "secret".
//
// You will most likely replace this with your own logic once you set up a real world application.
var storage = storage.NewMemoryStore()

// This secret is being used to sign access and refresh tokens as well as authorize codes.
var secret = []byte{"my super secret password"}

privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
  panic("unable to create private key")
}

// check the api docs of compose.Config for further configuration options
var config = compose.Config {
  	AccessTokenLifespan: time.Minute * 30,
  	// ...
}

var oauth2Provider = compose.ComposeAllEnabled(config, storage, secret, privateKey)

// The authorize endpoint is usually at "https://mydomain.com/oauth2/auth".
func authorizeHandlerFunc(rw http.ResponseWriter, req *http.Request) {
	// This context will be passed to all methods. It doesn't fulfill a real purpose in the standard library but could be used
	// to abort database lookups or similar things.
	ctx := req.Context()

	// Let's create an AuthorizeRequest object!
	// It will analyze the request and extract important information like scopes, response type and others.
	ar, err := oauth2Provider.NewAuthorizeRequest(ctx, req)
	if err != nil {
		oauth2Provider.WriteAuthorizeError(rw, ar, err)
		return
	}

	// Normally, this would be the place where you would check if the user is logged in and gives his consent.
	// We're simplifying things and just checking if the request includes a valid username and password
	if req.Form.Get("username") != "peter" {
		rw.Header().Set("Content-Type", "text/html; charset=utf-8")
		rw.Write([]byte(`<h1>Login page</h1>`))
		rw.Write([]byte(`
			<p>Howdy! This is the log in page. For this example, it is enough to supply the username.</p>
			<form method="post">
				<input type="text" name="username" /> <small>try peter</small><br>
				<input type="submit">
			</form>
		`))
		return
	}

	// Now that the user is authorized, we set up a session. When validating / looking up tokens, we additionally get
	// the session. You can store anything you want in it.

    // The session will be persisted by the store and made available when e.g. validating tokens or handling token endpoint requests.
    // The default OAuth2 and OpenID Connect handlers require the session to implement a few methods. Apart from that, the
    // session struct can be anything you want it to be.
	mySessionData := &fosite.DefaultSession{
		Username: req.Form.Get("username"),
	}

	// It's also wise to check the requested scopes, e.g.:
	// if authorizeRequest.GetScopes().Has("admin") {
	//     http.Error(rw, "you're not allowed to do that", http.StatusForbidden)
	//     return
	// }

	// Now we need to get a response. This is the place where the AuthorizeEndpointHandlers kick in and start processing the request.
	// NewAuthorizeResponse is capable of running multiple response type handlers which in turn enables this library
	// to support open id connect.
	response, err := oauth2Provider.NewAuthorizeResponse(ctx, ar, mySessionData)
	if err != nil {
		oauth2Provider.WriteAuthorizeError(rw, ar, err)
		return
	}

	// Awesome, now we redirect back to the client redirect uri and pass along an authorize code
	oauth2Provider.WriteAuthorizeResponse(rw, ar, response)
}

// The token endpoint is usually at "https://mydomain.com/oauth2/token"
func tokenHandlerFunc(rw http.ResponseWriter, req *http.Request) {
	ctx := req.Context()
	mySessionData := new(fosite.DefaultSession)

	// This will create an access request object and iterate through the registered TokenEndpointHandlers to validate the request.
	accessRequest, err := oauth2Provider.NewAccessRequest(ctx, req, mySessionData)
	if err != nil {
		oauth2Provider.WriteAccessError(rw, accessRequest, err)
		return
	}

	if mySessionData.Username == "super-admin-guy" {
		// do something...
	}

	// Next we create a response for the access request. Again, we iterate through the TokenEndpointHandlers
	// and aggregate the result in response.
	response, err := oauth2Provider.NewAccessResponse(ctx, accessRequest)
	if err != nil {
		oauth2Provider.WriteAccessError(rw, accessRequest, err)
		return
	}

	// All done, send the response.
	oauth2Provider.WriteAccessResponse(rw, accessRequest, response)

	// The client has a valid access token now
}

func someResourceProviderHandlerFunc(rw http.ResponseWriter, req *http.Request) {
	ctx := req.Context()
	mySessionData := new(fosite.DefaultSession)
	requiredScope := "blogposts.create"

	ar, err := oauth2Provider.IntrospectToken(ctx, fosite.AccessTokenFromRequest(req), fosite.AccessToken, mySessionData, requiredScope)
	if err != nil {
		// ...
	}

	// if now error occurred the token + scope is valid and you have access to:
	// ar.GetClient().GetID(), ar.GetGrantedScopes(), ar.GetScopes(), mySessionData.UserID, ar.GetRequestedAt(), ...
}

Code Examples

Fosite provides integration tests as well as a http server example:

  • Fosite ships with an example app that runs in your browser: Example app.
  • If you want to check out how to enable specific handlers, check out the integration tests.

If you have working examples yourself, please share them with us!

Example Storage Implementation

Fosite does not ship a storage implementation. This is intended, because requirements vary with every environment. You can find a reference implementation at storage/memory.go. This storage fulfills requirements from all OAuth2 and OpenID Connect handlers.

Extensible handlers

OAuth2 is a framework. Fosite mimics this behaviour by enabling you to replace existing or create new OAuth2 handlers. Of course, fosite ships handlers for all OAuth2 and OpenID Connect flows.

This section is missing documentation and we welcome any contributions in that direction.

JWT Introspection

Please note that when using the OAuth2StatelessJWTIntrospectionFactory access token revocation is not possible.

Contribute

You need git and golang installed on your system.

go get -d github.com/ory/fosite
cd $GOPATH/src/github.com/ory/fosite
git status
git remote add myfork <url-to-your-fork>
go test ./..

Simple, right? Now you are ready to go! Make sure to run go test ./... often, detecting problems with your code rather sooner than later. Please read [CONTRIBUTE.md] before creating pull requests and issues.

Refresh mock objects

Run ./generate-mocks.sh in fosite's root directory or run the contents of [generate-mocks.sh] in a shell.

Hall of Fame

This place is reserved for the fearless bug hunters, reviewers and contributors (alphabetical order).

Find out more about the author of Fosite and Hydra, and the Ory Company.

Documentation

Index

Constants

View Source 
const MinParameterEntropy = 8

Variables

View Source 
var (
	ErrUnknownRequest = &RFC6749Error{
		Name:        errUnknownErrorName,
		Description: "The handler is not responsible for this request",
		Code:        http.StatusBadRequest,
	}
	ErrRequestForbidden = &RFC6749Error{
		Name:        errRequestForbidden,
		Description: "The request is not allowed",
		Hint:        "You are not allowed to perform this action.",
		Code:        http.StatusForbidden,
	}
	ErrInvalidRequest = &RFC6749Error{
		Name:        errInvalidRequestName,
		Description: "The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed",
		Hint:        "Make sure that the various parameters are correct, be aware of case sensitivity and trim your parameters. Make sure that the client you are using has exactly whitelisted the redirect_uri you specified.",
		Code:        http.StatusBadRequest,
	}
	ErrUnauthorizedClient = &RFC6749Error{
		Name:        errUnauthorizedClientName,
		Description: "The client is not authorized to request a token using this method",
		Hint:        "Make sure that client id and secret are correctly specified and that the client exists.",
		Code:        http.StatusBadRequest,
	}
	ErrAccessDenied = &RFC6749Error{
		Name:        errAccessDeniedName,
		Description: "The resource owner or authorization server denied the request",
		Hint:        "Make sure that the request you are making is valid. Maybe the credential or request parameters you are using are limited in scope or otherwise restricted.",
		Code:        http.StatusForbidden,
	}
	ErrUnsupportedResponseType = &RFC6749Error{
		Name:        errUnsupportedResponseTypeName,
		Description: "The authorization server does not support obtaining a token using this method",
		Code:        http.StatusBadRequest,
	}
	ErrInvalidScope = &RFC6749Error{
		Name:        errInvalidScopeName,
		Description: "The requested scope is invalid, unknown, or malformed",
		Code:        http.StatusBadRequest,
	}
	ErrServerError = &RFC6749Error{
		Name:        errServerErrorName,
		Description: "The authorization server encountered an unexpected condition that prevented it from fulfilling the request",
		Code:        http.StatusInternalServerError,
	}
	ErrTemporarilyUnavailable = &RFC6749Error{
		Name:        errTemporarilyUnavailableName,
		Description: "The authorization server is currently unable to handle the request due to a temporary overloading or maintenance of the server",
		Code:        http.StatusServiceUnavailable,
	}
	ErrUnsupportedGrantType = &RFC6749Error{
		Name:        errUnsupportedGrantTypeName,
		Description: "The authorization grant type is not supported by the authorization server",
		Code:        http.StatusBadRequest,
	}
	ErrInvalidGrant = &RFC6749Error{
		Name:        errInvalidGrantName,
		Description: "The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client",
		Code:        http.StatusBadRequest,
	}
	ErrInvalidClient = &RFC6749Error{
		Name:        errInvalidClientName,
		Description: "Client authentication failed (e.g., unknown client, no client authentication included, or unsupported authentication method)",
		Code:        http.StatusUnauthorized,
	}
	ErrInvalidState = &RFC6749Error{
		Name:        errInvalidStateName,
		Description: fmt.Sprintf("The state is missing or has less than %d characters and is therefore considered too weak", MinParameterEntropy),
		Code:        http.StatusBadRequest,
	}
	ErrMisconfiguration = &RFC6749Error{
		Name:        errMisconfigurationName,
		Description: "The request failed because of an internal error that is probably caused by misconfiguration",
		Code:        http.StatusInternalServerError,
	}
	ErrInsufficientEntropy = &RFC6749Error{
		Name:        errInsufficientEntropyName,
		Description: fmt.Sprintf("The request used a security parameter (e.g., anti-replay, anti-csrf) with insufficient entropy (minimum of %d characters)", MinParameterEntropy),
		Code:        http.StatusBadRequest,
	}
	ErrNotFound = &RFC6749Error{
		Name:        errNotFoundName,
		Description: "Could not find the requested resource(s)",
		Code:        http.StatusNotFound,
	}
	ErrRequestUnauthorized = &RFC6749Error{
		Name:        errRequestUnauthorizedName,
		Description: "The request could not be authorized",
		Hint:        "Check that you provided valid credentials in the right format.",
		Code:        http.StatusUnauthorized,
	}
	ErrTokenSignatureMismatch = &RFC6749Error{
		Name:        errTokenSignatureMismatchName,
		Description: "Token signature mismatch",
		Hint:        "Check that you provided  a valid token in the right format.",
		Code:        http.StatusBadRequest,
	}
	ErrInvalidTokenFormat = &RFC6749Error{
		Name:        errInvalidTokenFormatName,
		Description: "Invalid token format",
		Hint:        "Check that you provided a valid token in the right format.",
		Code:        http.StatusBadRequest,
	}
	ErrTokenExpired = &RFC6749Error{
		Name:        errTokenExpiredName,
		Description: "Token expired",
		Hint:        "The token expired.",
		Code:        http.StatusUnauthorized,
	}
	ErrScopeNotGranted = &RFC6749Error{
		Name:        errScopeNotGrantedName,
		Description: "The token was not granted the requested scope",
		Hint:        "The resource owner did not grant the requested scope.",
		Code:        http.StatusForbidden,
	}
	ErrTokenClaim = &RFC6749Error{
		Name:        errTokenClaimName,
		Description: "The token failed validation due to a claim mismatch",
		Hint:        "One or more token claims failed validation.",
		Code:        http.StatusUnauthorized,
	}
	ErrInactiveToken = &RFC6749Error{
		Name:        errTokenInactiveName,
		Description: "Token is inactive because it is malformed, expired or otherwise invalid",
		Hint:        "Token validation failed.",
		Code:        http.StatusUnauthorized,
	}
	ErrRevokationClientMismatch = &RFC6749Error{
		Name:        errRevokationClientMismatchName,
		Description: "Token was not issued to the client making the revokation request",
		Code:        http.StatusBadRequest,
	}
	ErrLoginRequired = &RFC6749Error{
		Name:        errLoginRequired,
		Description: "The Authorization Server requires End-User authentication",
		Code:        http.StatusBadRequest,
	}
	ErrInteractionRequired = &RFC6749Error{
		Description: "The Authorization Server requires End-User interaction of some form to proceed",
		Name:        errInteractionRequired,
		Code:        http.StatusBadRequest,
	}
	ErrConsentRequired = &RFC6749Error{
		Description: "The Authorization Server requires End-User consent",
		Name:        errConsentRequired,
		Code:        http.StatusBadRequest,
	}
)

Functions

func AccessTokenFromRequest added in v0.2.0 

func AccessTokenFromRequest(req *http.Request) string

func ExactScopeStrategy added in v0.17.1 

func ExactScopeStrategy(haystack []string, needle string) bool

func GetRedirectURIFromRequestValues 

func GetRedirectURIFromRequestValues(values url.Values) (string, error)

GetRedirectURIFromRequestValues extracts the redirect_uri from values but does not do any sort of validation.

Considered specifications

  • https://tools.ietf.org/html/rfc6749#section-3.1 The endpoint URI MAY include an "application/x-www-form-urlencoded" formatted (per Appendix B) query component ([RFC3986] Section 3.4), which MUST be retained when adding additional query parameters.

func HierarchicScopeStrategy added in v0.2.0 

func HierarchicScopeStrategy(haystack []string, needle string) bool

func IsRedirectURISecure 

func IsRedirectURISecure(redirectURI *url.URL) bool

func IsValidRedirectURI 

func IsValidRedirectURI(redirectURI *url.URL) bool

IsValidRedirectURI validates a redirect_uri as specified in:

* https://tools.ietf.org/html/rfc6749#section-3.1.2

  • The redirection endpoint URI MUST be an absolute URI as defined by [RFC3986] Section 4.3.
  • The endpoint URI MUST NOT include a fragment component.

func MatchRedirectURIWithClientRedirectURIs 

func MatchRedirectURIWithClientRedirectURIs(rawurl string, client Client) (*url.URL, error)

MatchRedirectURIWithClientRedirectURIs if the given uri is a registered redirect uri. Does not perform uri validation.

Considered specifications

  • https://tools.ietf.org/html/rfc6749#section-3.1.2.3 If multiple redirection URIs have been registered, if only part of the redirection URI has been registered, or if no redirection URI has been registered, the client MUST include a redirection URI with the authorization request using the "redirect_uri" request parameter.

    When a redirection URI is included in an authorization request, the authorization server MUST compare and match the value received against at least one of the registered redirection URIs (or URI components) as defined in [RFC3986] Section 6, if any redirection URIs were registered. If the client registration included the full redirection URI, the authorization server MUST compare the two URIs using simple string comparison as defined in [RFC3986] Section 6.2.1.

* https://tools.ietf.org/html/rfc6819#section-4.4.1.7

  • The authorization server may also enforce the usage and validation of pre-registered redirect URIs (see Section 5.2.3.5). This will allow for early recognition of authorization "code" disclosure to counterfeit clients.
  • The attacker will need to use another redirect URI for its authorization process rather than the target web site because it needs to intercept the flow. So, if the authorization server associates the authorization "code" with the redirect URI of a particular end-user authorization and validates this redirect URI with the redirect URI passed to the token's endpoint, such an attack is detected (see Section 5.2.4.5).

func NewContext 

func NewContext() context.Context

func StringInSlice 

func StringInSlice(needle string, haystack []string) bool

StringInSlice returns true if needle exists in haystack

func WildcardScopeStrategy added in v0.11.0 

func WildcardScopeStrategy(matchers []string, needle string) bool

Types

type AccessRequest 

type AccessRequest struct {
	GrantTypes       Arguments `json:"grantTypes" gorethink:"grantTypes"`
	HandledGrantType Arguments `json:"handledGrantType" gorethink:"handledGrantType"`

	Request
}

func NewAccessRequest 

func NewAccessRequest(session Session) *AccessRequest

func (*AccessRequest) GetGrantTypes 

func (a *AccessRequest) GetGrantTypes() Arguments

type AccessRequester 

type AccessRequester interface {
	// GetGrantType returns the requests grant type.
	GetGrantTypes() (grantTypes Arguments)

	Requester
}

AccessRequester is a token endpoint's request context.

type AccessResponder 

type AccessResponder interface {
	// SetExtra sets a key value pair for the access response.
	SetExtra(key string, value interface{})

	// GetExtra returns a key's value.
	GetExtra(key string) interface{}

	SetExpiresIn(time.Duration)

	SetScopes(scopes Arguments)

	// SetAccessToken sets the responses mandatory access token.
	SetAccessToken(token string)

	// SetTokenType set's the responses mandatory token type
	SetTokenType(tokenType string)

	// SetAccessToken returns the responses access token.
	GetAccessToken() (token string)

	// GetTokenType returns the responses token type.
	GetTokenType() (token string)

	// ToMap converts the response to a map.
	ToMap() map[string]interface{}
}

AccessResponder is a token endpoint's response.

type AccessResponse 

type AccessResponse struct {
	Extra       map[string]interface{}
	AccessToken string
	TokenType   string
}

func NewAccessResponse 

func NewAccessResponse() *AccessResponse

func (*AccessResponse) GetAccessToken 

func (a *AccessResponse) GetAccessToken() string

func (*AccessResponse) GetExtra 

func (a *AccessResponse) GetExtra(key string) interface{}

func (*AccessResponse) GetTokenType 

func (a *AccessResponse) GetTokenType() string

func (*AccessResponse) SetAccessToken 

func (a *AccessResponse) SetAccessToken(token string)

func (*AccessResponse) SetExpiresIn 

func (a *AccessResponse) SetExpiresIn(expiresIn time.Duration)

func (*AccessResponse) SetExtra 

func (a *AccessResponse) SetExtra(key string, value interface{})

func (*AccessResponse) SetScopes 

func (a *AccessResponse) SetScopes(scopes Arguments)

func (*AccessResponse) SetTokenType 

func (a *AccessResponse) SetTokenType(name string)

func (*AccessResponse) ToMap 

func (a *AccessResponse) ToMap() map[string]interface{}

type Arguments 

type Arguments []string

func (Arguments) Exact 

func (r Arguments) Exact(name string) bool

func (Arguments) Has 

func (r Arguments) Has(items ...string) bool

func (Arguments) HasOneOf added in v0.15.6 

func (r Arguments) HasOneOf(items ...string) bool

func (Arguments) Matches 

func (r Arguments) Matches(items ...string) bool

type AuthorizeEndpointHandler 

type AuthorizeEndpointHandler interface {
	// HandleAuthorizeRequest handles an authorize endpoint request. To extend the handler's capabilities, the http request
	// is passed along, if further information retrieval is required. If the handler feels that he is not responsible for
	// the authorize request, he must return nil and NOT modify session nor responder neither requester.
	//
	// The following spec is a good example of what HandleAuthorizeRequest should do.
	// * https://tools.ietf.org/html/rfc6749#section-3.1.1
	//   response_type REQUIRED.
	//   The value MUST be one of "code" for requesting an
	//   authorization code as described by Section 4.1.1, "token" for
	//   requesting an access token (implicit grant) as described by
	//   Section 4.2.1, or a registered extension value as described by Section 8.4.
	HandleAuthorizeEndpointRequest(ctx context.Context, requester AuthorizeRequester, responder AuthorizeResponder) error
}

type AuthorizeEndpointHandlers 

type AuthorizeEndpointHandlers []AuthorizeEndpointHandler

AuthorizeEndpointHandlers is a list of AuthorizeEndpointHandler

func (*AuthorizeEndpointHandlers) Append 

func (a *AuthorizeEndpointHandlers) Append(h AuthorizeEndpointHandler)

Append adds an AuthorizeEndpointHandler to this list. Ignores duplicates based on reflect.TypeOf.

type AuthorizeRequest 

type AuthorizeRequest struct {
	ResponseTypes        Arguments `json:"responseTypes" gorethink:"responseTypes"`
	RedirectURI          *url.URL  `json:"redirectUri" gorethink:"redirectUri"`
	State                string    `json:"state" gorethink:"state"`
	HandledResponseTypes Arguments `json:"handledResponseTypes" gorethink:"handledResponseTypes"`

	Request
}

AuthorizeRequest is an implementation of AuthorizeRequester

func NewAuthorizeRequest 

func NewAuthorizeRequest() *AuthorizeRequest

func (*AuthorizeRequest) DidHandleAllResponseTypes 

func (d *AuthorizeRequest) DidHandleAllResponseTypes() bool

func (*AuthorizeRequest) GetRedirectURI 

func (d *AuthorizeRequest) GetRedirectURI() *url.URL

func (*AuthorizeRequest) GetResponseTypes 

func (d *AuthorizeRequest) GetResponseTypes() Arguments

func (*AuthorizeRequest) GetState 

func (d *AuthorizeRequest) GetState() string

func (*AuthorizeRequest) IsRedirectURIValid 

func (d *AuthorizeRequest) IsRedirectURIValid() bool

func (*AuthorizeRequest) SetResponseTypeHandled 

func (d *AuthorizeRequest) SetResponseTypeHandled(name string)

type AuthorizeRequester 

type AuthorizeRequester interface {
	// GetResponseTypes returns the requested response types
	GetResponseTypes() (responseTypes Arguments)

	// SetResponseTypeHandled marks a response_type (e.g. token or code) as handled indicating that the response type
	// is supported.
	SetResponseTypeHandled(responseType string)

	// DidHandleAllResponseTypes returns if all requested response types have been handled correctly
	DidHandleAllResponseTypes() (didHandle bool)

	// GetRedirectURI returns the requested redirect URI
	GetRedirectURI() (redirectURL *url.URL)

	// IsRedirectURIValid returns false if the redirect is not rfc-conform (i.e. missing client, not on white list,
	// or malformed)
	IsRedirectURIValid() (isValid bool)

	// GetState returns the request's state.
	GetState() (state string)

	Requester
}

AuthorizeRequester is an authorize endpoint's request context.

type AuthorizeResponder 

type AuthorizeResponder interface {
	// GetCode returns the response's authorize code if set.
	GetCode() string

	// GetHeader returns the response's header
	GetHeader() (header http.Header)

	// AddHeader adds an header key value pair to the response
	AddHeader(key, value string)

	// GetQuery returns the response's query
	GetQuery() (query url.Values)

	// AddQuery adds an url query key value pair to the response
	AddQuery(key, value string)

	// GetHeader returns the response's url fragments
	GetFragment() (fragment url.Values)

	// AddHeader adds a key value pair to the response's url fragment
	AddFragment(key, value string)
}

AuthorizeResponder is an authorization endpoint's response.

type AuthorizeResponse 

type AuthorizeResponse struct {
	Header   http.Header
	Query    url.Values
	Fragment url.Values
	// contains filtered or unexported fields
}

AuthorizeResponse is an implementation of AuthorizeResponder

func NewAuthorizeResponse 

func NewAuthorizeResponse() *AuthorizeResponse

func (*AuthorizeResponse) AddFragment 

func (a *AuthorizeResponse) AddFragment(key, value string)

func (*AuthorizeResponse) AddHeader 

func (a *AuthorizeResponse) AddHeader(key, value string)

func (*AuthorizeResponse) AddQuery 

func (a *AuthorizeResponse) AddQuery(key, value string)

func (*AuthorizeResponse) GetCode 

func (a *AuthorizeResponse) GetCode() string

func (*AuthorizeResponse) GetFragment 

func (a *AuthorizeResponse) GetFragment() url.Values

func (*AuthorizeResponse) GetHeader 

func (a *AuthorizeResponse) GetHeader() http.Header

func (*AuthorizeResponse) GetQuery 

func (a *AuthorizeResponse) GetQuery() url.Values

type BCrypt added in v0.4.0 

type BCrypt struct {
	WorkFactor int
}

BCrypt implements the Hasher interface by using BCrypt.

func (*BCrypt) Compare added in v0.4.0 

func (b *BCrypt) Compare(hash, data []byte) error

func (*BCrypt) Hash added in v0.4.0 

func (b *BCrypt) Hash(data []byte) ([]byte, error)

type Client 

type Client interface {
	// GetID returns the client ID.
	GetID() string

	// GetHashedSecret returns the hashed secret as it is stored in the store.
	GetHashedSecret() []byte

	// Returns the client's allowed redirect URIs.
	GetRedirectURIs() []string

	// Returns the client's allowed grant types.
	GetGrantTypes() Arguments

	// Returns the client's allowed response types.
	GetResponseTypes() Arguments

	// Returns the scopes this client is allowed to request.
	GetScopes() Arguments

	// IsPublic returns true, if this client is marked as public.
	IsPublic() bool
}

Client represents a client or an app.

type ClientManager 

type ClientManager interface {
	// GetClient loads the client by its ID or returns an error
	// if the client does not exist or another error occurred.
	GetClient(ctx context.Context, id string) (Client, error)
}

ClientManager defines the (persistent) manager interface for clients.

type DefaultClient 

type DefaultClient struct {
	ID            string   `json:"id"`
	Secret        []byte   `json:"client_secret,omitempty"`
	RedirectURIs  []string `json:"redirect_uris"`
	GrantTypes    []string `json:"grant_types"`
	ResponseTypes []string `json:"response_types"`
	Scopes        []string `json:"scopes"`
	Public        bool     `json:"public"`
}

DefaultClient is a simple default implementation of the Client interface.

func (*DefaultClient) GetGrantTypes 

func (c *DefaultClient) GetGrantTypes() Arguments

func (*DefaultClient) GetHashedSecret 

func (c *DefaultClient) GetHashedSecret() []byte

func (*DefaultClient) GetID 

func (c *DefaultClient) GetID() string

func (*DefaultClient) GetRedirectURIs 

func (c *DefaultClient) GetRedirectURIs() []string

func (*DefaultClient) GetResponseTypes 

func (c *DefaultClient) GetResponseTypes() Arguments

func (*DefaultClient) GetScopes added in v0.2.0 

func (c *DefaultClient) GetScopes() Arguments

func (*DefaultClient) IsPublic added in v0.4.0 

func (c *DefaultClient) IsPublic() bool

type DefaultSession added in v0.5.0 

type DefaultSession struct {
	ExpiresAt map[TokenType]time.Time
	Username  string
	Subject   string
}

DefaultSession is a default implementation of the session interface.

func (*DefaultSession) Clone added in v0.6.0 

func (s *DefaultSession) Clone() Session

func (*DefaultSession) GetExpiresAt added in v0.5.0 

func (s *DefaultSession) GetExpiresAt(key TokenType) time.Time

func (*DefaultSession) GetSubject added in v0.5.0 

func (s *DefaultSession) GetSubject() string

func (*DefaultSession) GetUsername added in v0.5.0 

func (s *DefaultSession) GetUsername() string

func (*DefaultSession) SetExpiresAt added in v0.5.0 

func (s *DefaultSession) SetExpiresAt(key TokenType, exp time.Time)

type Fosite 

type Fosite struct {
	Store                      Storage
	AuthorizeEndpointHandlers  AuthorizeEndpointHandlers
	TokenEndpointHandlers      TokenEndpointHandlers
	TokenIntrospectionHandlers TokenIntrospectionHandlers
	RevocationHandlers         RevocationHandlers
	Hasher                     Hasher
	ScopeStrategy              ScopeStrategy

	// SendDebugMessagesToClients if set to true, includes error debug messages in response payloads. Be aware that sensitive
	// data may be exposed, depending on your implementation of Fosite. Such sensitive data might include database error
	// codes or other information. Proceed with caution!
	SendDebugMessagesToClients bool
}

Fosite implements OAuth2Provider.

func (*Fosite) IntrospectToken added in v0.4.0 

func (f *Fosite) IntrospectToken(ctx context.Context, token string, tokenType TokenType, session Session, scopes ...string) (TokenType, AccessRequester, error)

func (*Fosite) NewAccessRequest 

func (f *Fosite) NewAccessRequest(ctx context.Context, r *http.Request, session Session) (AccessRequester, error)

Implements

  • https://tools.ietf.org/html/rfc6749#section-2.3.1 Clients in possession of a client password MAY use the HTTP Basic authentication scheme as defined in [RFC2617] to authenticate with the authorization server. The client identifier is encoded using the "application/x-www-form-urlencoded" encoding algorithm per Appendix B, and the encoded value is used as the username; the client password is encoded using the same algorithm and used as the password. The authorization server MUST support the HTTP Basic authentication scheme for authenticating clients that were issued a client password. Including the client credentials in the request-body using the two parameters is NOT RECOMMENDED and SHOULD be limited to clients unable to directly utilize the HTTP Basic authentication scheme (or other password-based HTTP authentication schemes). The parameters can only be transmitted in the request-body and MUST NOT be included in the request URI.
  • https://tools.ietf.org/html/rfc6749#section-3.2.1
  • Confidential clients or other clients issued client credentials MUST authenticate with the authorization server as described in Section 2.3 when making requests to the token endpoint.
  • If the client type is confidential or the client was issued client credentials (or assigned other authentication requirements), the client MUST authenticate with the authorization server as described in Section 3.2.1.

func (*Fosite) NewAccessResponse 

func (f *Fosite) NewAccessResponse(ctx context.Context, requester AccessRequester) (AccessResponder, error)

func (*Fosite) NewAuthorizeRequest 

func (c *Fosite) NewAuthorizeRequest(ctx context.Context, r *http.Request) (AuthorizeRequester, error)

func (*Fosite) NewAuthorizeResponse 

func (o *Fosite) NewAuthorizeResponse(ctx context.Context, ar AuthorizeRequester, session Session) (AuthorizeResponder, error)

func (*Fosite) NewIntrospectionRequest added in v0.4.0 

func (f *Fosite) NewIntrospectionRequest(ctx context.Context, r *http.Request, session Session) (IntrospectionResponder, error)

NewIntrospectionRequest initiates token introspection as defined in https://tools.ietf.org/search/rfc7662#section-2.1

The protected resource calls the introspection endpoint using an HTTP POST [RFC7231] request with parameters sent as "application/x-www-form-urlencoded" data as defined in [W3C.REC-html5-20141028]. The protected resource sends a parameter representing the token along with optional parameters representing additional context that is known by the protected resource to aid the authorization server in its response.

* token REQUIRED. The string value of the token. For access tokens, this is the "access_token" value returned from the token endpoint defined in OAuth 2.0 [RFC6749], Section 5.1. For refresh tokens, this is the "refresh_token" value returned from the token endpoint as defined in OAuth 2.0 [RFC6749], Section 5.1. Other token types are outside the scope of this specification.

* token_type_hint OPTIONAL. A hint about the type of the token submitted for introspection. The protected resource MAY pass this parameter to help the authorization server optimize the token lookup. If the server is unable to locate the token using the given hint, it MUST extend its search across all of its supported token types. An authorization server MAY ignore this parameter, particularly if it is able to detect the token type automatically. Values for this field are defined in the "OAuth Token Type Hints" registry defined in OAuth Token Revocation [RFC7009].

The introspection endpoint MAY accept other OPTIONAL parameters to provide further context to the query. For instance, an authorization server may desire to know the IP address of the client accessing the protected resource to determine if the correct client is likely to be presenting the token. The definition of this or any other parameters are outside the scope of this specification, to be defined by service documentation or extensions to this specification. If the authorization server is unable to determine the state of the token without additional information, it SHOULD return an introspection response indicating the token is not active as described in Section 2.2.

To prevent token scanning attacks, the endpoint MUST also require some form of authorization to access this endpoint, such as client authentication as described in OAuth 2.0 [RFC6749] or a separate OAuth 2.0 access token such as the bearer token described in OAuth 2.0 Bearer Token Usage [RFC6750]. The methods of managing and validating these authentication credentials are out of scope of this specification.

For example, the following shows a protected resource calling the token introspection endpoint to query about an OAuth 2.0 bearer token. The protected resource is using a separate OAuth 2.0 bearer token to authorize this call.

The following is a non-normative example request: 

POST /introspect HTTP/1.1
Host: server.example.com
Accept: application/json
Content-Type: application/x-www-form-urlencoded
Authorization: Bearer 23410913-abewfq.123483

token=2YotnFZFEjr1zCsicMWpAA

In this example, the protected resource uses a client identifier and client secret to authenticate itself to the introspection endpoint. The protected resource also sends a token type hint indicating that it is inquiring about an access token.

The following is a non-normative example request: 

POST /introspect HTTP/1.1
Host: server.example.com
Accept: application/json
Content-Type: application/x-www-form-urlencoded
Authorization: Basic czZCaGRSa3F0MzpnWDFmQmF0M2JW

token=mF_9.B5f-4.1JqM&token_type_hint=access_token

func (*Fosite) NewRevocationRequest added in v0.4.0 

func (f *Fosite) NewRevocationRequest(ctx context.Context, r *http.Request) error

NewRevocationRequest handles incoming token revocation requests and validates various parameters as specified in: https://tools.ietf.org/html/rfc7009#section-2.1

The authorization server first validates the client credentials (in case of a confidential client) and then verifies whether the token was issued to the client making the revocation request. If this validation fails, the request is refused and the client is informed of the error by the authorization server as described below.

In the next step, the authorization server invalidates the token. The invalidation takes place immediately, and the token cannot be used again after the revocation.

* https://tools.ietf.org/html/rfc7009#section-2.2 An invalid token type hint value is ignored by the authorization server and does not influence the revocation response.

func (*Fosite) WriteAccessError 

func (c *Fosite) WriteAccessError(rw http.ResponseWriter, _ AccessRequester, err error)

func (*Fosite) WriteAccessResponse 

func (c *Fosite) WriteAccessResponse(rw http.ResponseWriter, requester AccessRequester, responder AccessResponder)

func (*Fosite) WriteAuthorizeError 

func (c *Fosite) WriteAuthorizeError(rw http.ResponseWriter, ar AuthorizeRequester, err error)

func (*Fosite) WriteAuthorizeResponse 

func (c *Fosite) WriteAuthorizeResponse(rw http.ResponseWriter, ar AuthorizeRequester, resp AuthorizeResponder)

func (*Fosite) WriteIntrospectionError added in v0.4.0 

func (f *Fosite) WriteIntrospectionError(rw http.ResponseWriter, err error)

WriteIntrospectionError responds with token metadata discovered by token introspection as defined in https://tools.ietf.org/search/rfc7662#section-2.2

If the protected resource uses OAuth 2.0 client credentials to authenticate to the introspection endpoint and its credentials are invalid, the authorization server responds with an HTTP 401 (Unauthorized) as described in Section 5.2 of OAuth 2.0 [RFC6749].

If the protected resource uses an OAuth 2.0 bearer token to authorize its call to the introspection endpoint and the token used for authorization does not contain sufficient privileges or is otherwise invalid for this request, the authorization server responds with an HTTP 401 code as described in Section 3 of OAuth 2.0 Bearer Token Usage [RFC6750].

Note that a properly formed and authorized query for an inactive or otherwise invalid token (or a token the protected resource is not allowed to know about) is not considered an error response by this specification. In these cases, the authorization server MUST instead respond with an introspection response with the "active" field set to "false" as described in Section 2.2.

func (*Fosite) WriteIntrospectionResponse added in v0.4.0 

func (f *Fosite) WriteIntrospectionResponse(rw http.ResponseWriter, r IntrospectionResponder)

WriteIntrospectionResponse responds with an error if token introspection failed as defined in https://tools.ietf.org/search/rfc7662#section-2.3

The server responds with a JSON object [RFC7159] in "application/ json" format with the following top-level members.

* active REQUIRED. Boolean indicator of whether or not the presented token is currently active. The specifics of a token's "active" state will vary depending on the implementation of the authorization server and the information it keeps about its tokens, but a "true" value return for the "active" property will generally indicate that a given token has been issued by this authorization server, has not been revoked by the resource owner, and is within its given time window of validity (e.g., after its issuance time and before its expiration time). See Section 4 for information on implementation of such checks.

* scope OPTIONAL. A JSON string containing a space-separated list of scopes associated with this token, in the format described in Section 3.3 of OAuth 2.0 [RFC6749].

* client_id OPTIONAL. Client identifier for the OAuth 2.0 client that requested this token.

* username OPTIONAL. Human-readable identifier for the resource owner who authorized this token.

* token_type OPTIONAL. Type of the token as defined in Section 5.1 of OAuth 2.0 [RFC6749].

* exp OPTIONAL. Integer timestamp, measured in the number of seconds since January 1 1970 UTC, indicating when this token will expire, as defined in JWT [RFC7519].

* iat OPTIONAL. Integer timestamp, measured in the number of seconds since January 1 1970 UTC, indicating when this token was originally issued, as defined in JWT [RFC7519].

* nbf OPTIONAL. Integer timestamp, measured in the number of seconds since January 1 1970 UTC, indicating when this token is not to be used before, as defined in JWT [RFC7519].

* sub OPTIONAL. Subject of the token, as defined in JWT [RFC7519]. Usually a machine-readable identifier of the resource owner who authorized this token.

* aud OPTIONAL. Service-specific string identifier or list of string identifiers representing the intended audience for this token, as defined in JWT [RFC7519].

* iss OPTIONAL. String representing the issuer of this token, as defined in JWT [RFC7519].

* jti OPTIONAL. String identifier for the token, as defined in JWT [RFC7519].

Specific implementations MAY extend this structure with their own service-specific response names as top-level members of this JSON object. Response names intended to be used across domains MUST be registered in the "OAuth Token Introspection Response" registry defined in Section 3.1.

The authorization server MAY respond differently to different protected resources making the same request. For instance, an authorization server MAY limit which scopes from a given token are returned for each protected resource to prevent a protected resource from learning more about the larger network than is necessary for its operation.

The response MAY be cached by the protected resource to improve performance and reduce load on the introspection endpoint, but at the cost of liveness of the information used by the protected resource to make authorization decisions. See Section 4 for more information regarding the trade off when the response is cached.

For example, the following response contains a set of information about an active token:

The following is a non-normative example response: 

HTTP/1.1 200 OK
Content-Type: application/json

{
  "active": true,
  "client_id": "l238j323ds-23ij4",
  "username": "jdoe",
  "scope": "read write dolphin",
  "sub": "Z5O3upPC88QrAjx00dis",
  "aud": "https://protected.example.net/resource",
  "iss": "https://server.example.com/",
  "exp": 1419356238,
  "iat": 1419350238,
  "extension_field": "twenty-seven"
}

If the introspection call is properly authorized but the token is not active, does not exist on this server, or the protected resource is not allowed to introspect this particular token, then the authorization server MUST return an introspection response with the "active" field set to "false". Note that to avoid disclosing too much of the authorization server's state to a third party, the authorization server SHOULD NOT include any additional information about an inactive token, including why the token is inactive.

The following is a non-normative example response for a token that has been revoked or is otherwise invalid: 

HTTP/1.1 200 OK
Content-Type: application/json

{
  "active": false
}

func (*Fosite) WriteRevocationResponse added in v0.4.0 

func (f *Fosite) WriteRevocationResponse(rw http.ResponseWriter, err error)

WriteRevocationResponse writes a token revocation response as specified in: https://tools.ietf.org/html/rfc7009#section-2.2

The authorization server responds with HTTP status code 200 if the token has been revoked successfully or if the client submitted an invalid token.

Note: invalid tokens do not cause an error response since the client cannot handle such an error in a reasonable way. Moreover, the purpose of the revocation request, invalidating the particular token, is already achieved.

type Hasher added in v0.4.0 

type Hasher interface {
	// Compare compares data with a hash and returns an error
	// if the two do not match.
	Compare(hash, data []byte) error

	// Hash creates a hash from data or returns an error.
	Hash(data []byte) ([]byte, error)
}

Hasher defines how a oauth2-compatible hasher should look like.

type IntrospectionResponder added in v0.4.0 

type IntrospectionResponder interface {
	// IsActive returns true if the introspected token is active and false otherwise.
	IsActive() bool

	// AccessRequester returns nil when IsActive() is false and the original access request object otherwise.
	GetAccessRequester() AccessRequester

	// GetTokenType optionally returns the type of the token that was introspected. The could be "access_token", "refresh_token",
	// or if the type can not be determined an empty string.
	GetTokenType() TokenType
}

IntrospectionResponse is the response object that will be returned when token introspection was successful, for example when the client is allowed to perform token introspection. Refer to https://tools.ietf.org/search/rfc7662#section-2.2 for more details.

type IntrospectionResponse added in v0.4.0 

type IntrospectionResponse struct {
	Active          bool            `json:"active"`
	AccessRequester AccessRequester `json:"extra"`
	TokenType       TokenType       `json:"token_type,omitempty"`
}

func (*IntrospectionResponse) GetAccessRequester added in v0.4.0 

func (r *IntrospectionResponse) GetAccessRequester() AccessRequester

func (*IntrospectionResponse) GetTokenType added in v0.18.0 

func (r *IntrospectionResponse) GetTokenType() TokenType

func (*IntrospectionResponse) IsActive added in v0.4.0 

func (r *IntrospectionResponse) IsActive() bool

type OAuth2Provider 

type OAuth2Provider interface {
	// NewAuthorizeRequest returns an AuthorizeRequest.
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#section-3.1
	//	 Extension response types MAY contain a space-delimited (%x20) list of
	//	 values, where the order of values does not matter (e.g., response
	//	 type "a b" is the same as "b a").  The meaning of such composite
	//	 response types is defined by their respective specifications.
	// * https://tools.ietf.org/html/rfc6749#section-3.1.2
	//   The redirection endpoint URI MUST be an absolute URI as defined by
	//   [RFC3986] Section 4.3.  The endpoint URI MAY include an
	//   "application/x-www-form-urlencoded" formatted (per Appendix B) query
	//   component ([RFC3986] Section 3.4), which MUST be retained when adding
	//   additional query parameters.  The endpoint URI MUST NOT include a
	//   fragment component.
	// * https://tools.ietf.org/html/rfc6749#section-3.1.2.2 (everything MUST be implemented)
	NewAuthorizeRequest(ctx context.Context, req *http.Request) (AuthorizeRequester, error)

	// NewAuthorizeResponse iterates through all response type handlers and returns their result or
	// ErrUnsupportedResponseType if none of the handler's were able to handle it.
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#section-3.1.1
	//	 Extension response types MAY contain a space-delimited (%x20) list of
	//	 values, where the order of values does not matter (e.g., response
	//	 type "a b" is the same as "b a").  The meaning of such composite
	//	 response types is defined by their respective specifications.
	//	 If an authorization request is missing the "response_type" parameter,
	//	 or if the response type is not understood, the authorization server
	//	 MUST return an error response as described in Section 4.1.2.1.
	NewAuthorizeResponse(ctx context.Context, requester AuthorizeRequester, session Session) (AuthorizeResponder, error)

	// WriteAuthorizeError returns the error codes to the redirection endpoint or shows the error to the user, if no valid
	// redirect uri was given. Implements rfc6749#section-4.1.2.1
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#section-3.1.2
	//   The redirection endpoint URI MUST be an absolute URI as defined by
	//   [RFC3986] Section 4.3.  The endpoint URI MAY include an
	//   "application/x-www-form-urlencoded" formatted (per Appendix B) query
	//   component ([RFC3986] Section 3.4), which MUST be retained when adding
	//   additional query parameters.  The endpoint URI MUST NOT include a
	//   fragment component.
	// * https://tools.ietf.org/html/rfc6749#section-4.1.2.1 (everything)
	// * https://tools.ietf.org/html/rfc6749#section-3.1.2.2 (everything MUST be implemented)
	WriteAuthorizeError(rw http.ResponseWriter, requester AuthorizeRequester, err error)

	// WriteAuthorizeResponse persists the AuthorizeSession in the store and redirects the user agent to the provided
	// redirect url or returns an error if storage failed.
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#rfc6749#section-4.1.2.1
	//   After completing its interaction with the resource owner, the
	//   authorization server directs the resource owner's user-agent back to
	//   the client.  The authorization server redirects the user-agent to the
	//   client's redirection endpoint previously established with the
	//   authorization server during the client registration process or when
	//   making the authorization request.
	// * https://tools.ietf.org/html/rfc6749#section-3.1.2.2 (everything MUST be implemented)
	WriteAuthorizeResponse(rw http.ResponseWriter, requester AuthorizeRequester, responder AuthorizeResponder)

	// NewAccessRequest creates a new access request object and validates
	// various parameters.
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#section-3.2 (everything)
	// * https://tools.ietf.org/html/rfc6749#section-3.2.1 (everything)
	//
	// Furthermore the registered handlers should implement their specs accordingly.
	NewAccessRequest(ctx context.Context, req *http.Request, session Session) (AccessRequester, error)

	// NewAccessResponse creates a new access response and validates that access_token and token_type are set.
	//
	// The following specs must be considered in any implementation of this method:
	// https://tools.ietf.org/html/rfc6749#section-5.1
	NewAccessResponse(ctx context.Context, requester AccessRequester) (AccessResponder, error)

	// WriteAccessError writes an access request error response.
	//
	// The following specs must be considered in any implementation of this method:
	// * https://tools.ietf.org/html/rfc6749#section-5.2 (everything)
	WriteAccessError(rw http.ResponseWriter, requester AccessRequester, err error)

	// WriteAccessResponse writes the access response.
	//
	// The following specs must be considered in any implementation of this method:
	// https://tools.ietf.org/html/rfc6749#section-5.1
	WriteAccessResponse(rw http.ResponseWriter, requester AccessRequester, responder AccessResponder)

	// NewRevocationRequest handles incoming token revocation requests and validates various parameters.
	//
	// The following specs must be considered in any implementation of this method:
	// https://tools.ietf.org/html/rfc7009#section-2.1
	NewRevocationRequest(ctx context.Context, r *http.Request) error

	// WriteRevocationResponse writes the revoke response.
	//
	// The following specs must be considered in any implementation of this method:
	// https://tools.ietf.org/html/rfc7009#section-2.2
	WriteRevocationResponse(rw http.ResponseWriter, err error)

	// IntrospectToken returns token metadata, if the token is valid. Tokens generated by the authorization endpoint,
	// such as the authorization code, can not be introspected.
	IntrospectToken(ctx context.Context, token string, tokenType TokenType, session Session, scope ...string) (TokenType, AccessRequester, error)

	// NewIntrospectionRequest initiates token introspection as defined in
	// https://tools.ietf.org/search/rfc7662#section-2.1
	NewIntrospectionRequest(ctx context.Context, r *http.Request, session Session) (IntrospectionResponder, error)

	// WriteIntrospectionError responds with an error if token introspection failed as defined in
	// https://tools.ietf.org/search/rfc7662#section-2.3
	WriteIntrospectionError(rw http.ResponseWriter, err error)

	// WriteIntrospectionResponse responds with token metadata discovered by token introspection as defined in
	// https://tools.ietf.org/search/rfc7662#section-2.2
	WriteIntrospectionResponse(rw http.ResponseWriter, r IntrospectionResponder)
}

OAuth2Provider is an interface that enables you to write OAuth2 handlers with only a few lines of code. Check fosite.Fosite for an implementation of this interface.

type RFC6749Error 

type RFC6749Error struct {
	Name        string `json:"error"`
	Description string `json:"error_description"`
	Hint        string `json:"error_hint,omitempty"`
	Code        int    `json:"status_code,omitempty"`
	Debug       string `json:"error_debug,omitempty"`
}

func ErrorToRFC6749Error 

func ErrorToRFC6749Error(err error) *RFC6749Error

func (*RFC6749Error) Details added in v0.7.0 

func (e *RFC6749Error) Details() []map[string]interface{}

func (*RFC6749Error) Error added in v0.7.0 

func (e *RFC6749Error) Error() string

func (*RFC6749Error) Reason added in v0.7.0 

func (e *RFC6749Error) Reason() string

func (*RFC6749Error) RequestID added in v0.7.0 

func (e *RFC6749Error) RequestID() string

func (*RFC6749Error) Status added in v0.7.0 

func (e *RFC6749Error) Status() string

func (*RFC6749Error) StatusCode 

func (e *RFC6749Error) StatusCode() int

func (*RFC6749Error) WithDebug added in v0.15.0 

func (e *RFC6749Error) WithDebug(debug string) *RFC6749Error

func (*RFC6749Error) WithDescription added in v0.16.4 

func (e *RFC6749Error) WithDescription(description string) *RFC6749Error

type Request 

type Request struct {
	ID            string     `json:"id" gorethink:"id"`
	RequestedAt   time.Time  `json:"requestedAt" gorethink:"requestedAt"`
	Client        Client     `json:"client" gorethink:"client"`
	Scopes        Arguments  `json:"scopes" gorethink:"scopes"`
	GrantedScopes Arguments  `json:"grantedScopes" gorethink:"grantedScopes"`
	Form          url.Values `json:"form" gorethink:"form"`
	Session       Session    `json:"session" gorethink:"session"`
}

Request is an implementation of Requester

func NewRequest 

func NewRequest() *Request

func (*Request) AppendRequestedScope added in v0.2.0 

func (a *Request) AppendRequestedScope(scope string)

func (*Request) GetClient 

func (a *Request) GetClient() Client

func (*Request) GetGrantedScopes 

func (a *Request) GetGrantedScopes() Arguments

func (*Request) GetID added in v0.4.0 

func (a *Request) GetID() string

func (*Request) GetRequestForm 

func (a *Request) GetRequestForm() url.Values

func (*Request) GetRequestedAt 

func (a *Request) GetRequestedAt() time.Time

func (*Request) GetRequestedScopes added in v0.2.0 

func (a *Request) GetRequestedScopes() Arguments

func (*Request) GetSession 

func (a *Request) GetSession() Session

func (*Request) GrantScope 

func (a *Request) GrantScope(scope string)

func (*Request) Merge 

func (a *Request) Merge(request Requester)

func (*Request) Sanitize added in v0.17.0 

func (a *Request) Sanitize(allowedParameters []string) Requester

func (*Request) SetID added in v0.15.0 

func (a *Request) SetID(id string)

func (*Request) SetRequestedScopes added in v0.2.0 

func (a *Request) SetRequestedScopes(s Arguments)

func (*Request) SetSession 

func (a *Request) SetSession(session Session)

type Requester 

type Requester interface {
	// SetID sets the unique identifier.
	SetID(id string)

	// GetID returns a unique identifier.
	GetID() string

	// GetRequestedAt returns the time the request was created.
	GetRequestedAt() (requestedAt time.Time)

	// GetClient returns the requests client.
	GetClient() (client Client)

	// GetRequestedScopes returns the request's scopes.
	GetRequestedScopes() (scopes Arguments)

	// SetRequestedScopes sets the request's scopes.
	SetRequestedScopes(scopes Arguments)

	// AppendRequestedScope appends a scope to the request.
	AppendRequestedScope(scope string)

	// GetGrantScopes returns all granted scopes.
	GetGrantedScopes() (grantedScopes Arguments)

	// GrantScope marks a request's scope as granted.
	GrantScope(scope string)

	// GetSession returns a pointer to the request's session or nil if none is set.
	GetSession() (session Session)

	// GetSession sets the request's session pointer.
	SetSession(session Session)

	// GetRequestForm returns the request's form input.
	GetRequestForm() url.Values

	// Merge merges the argument into the method receiver.
	Merge(requester Requester)

	// Sanitize returns a sanitized clone of the request which can be used for storage.
	Sanitize(allowedParameters []string) Requester
}

Requester is an abstract interface for handling requests in Fosite.

type RevocationHandler added in v0.4.0 

type RevocationHandler interface {
	// RevokeToken handles access and refresh token revocation.
	RevokeToken(ctx context.Context, token string, tokenType TokenType, client Client) error
}

RevocationHandler is the interface that allows token revocation for an OAuth2.0 provider. https://tools.ietf.org/html/rfc7009

RevokeToken is invoked after a new token revocation request is parsed.

https://tools.ietf.org/html/rfc7009#section-2.1 If the particular token is a refresh token and the authorization server supports the revocation of access tokens, then the authorization server SHOULD also invalidate all access tokens based on the same authorization grant (see Implementation Note). If the token passed to the request is an access token, the server MAY revoke the respective refresh token as well.

type RevocationHandlers added in v0.4.0 

type RevocationHandlers []RevocationHandler

RevocationHandlers is a list of RevocationHandler

func (*RevocationHandlers) Append added in v0.4.0 

func (t *RevocationHandlers) Append(h RevocationHandler)

Append adds an RevocationHandler to this list. Ignores duplicates based on reflect.TypeOf.

type ScopeStrategy added in v0.2.0 

type ScopeStrategy func(haystack []string, needle string) bool

ScopeStrategy is a strategy for matching scopes.

type Session added in v0.5.0 

type Session interface {
	// SetExpiresAt sets the expiration time of a token.
	//
	//  session.SetExpiresAt(fosite.AccessToken, time.Now().UTC().Add(time.Hour))
	SetExpiresAt(key TokenType, exp time.Time)

	// GetExpiresAt returns the expiration time of a token if set, or time.IsZero() if not.
	//
	//  session.GetExpiresAt(fosite.AccessToken)
	GetExpiresAt(key TokenType) time.Time

	// GetUsername returns the username, if set. This is optional and only used during token introspection.
	GetUsername() string

	// GetSubject returns the subject, if set. This is optional and only used during token introspection.
	GetSubject() string

	// Clone clones the session.
	Clone() Session
}

Session is an interface that is used to store session data between OAuth2 requests. It can be used to look up when a session expires or what the subject's name was.

type Storage 

type Storage interface {
	ClientManager
}

Storage defines fosite's minimal storage interface.

type TokenEndpointHandler 

type TokenEndpointHandler interface {
	// PopulateTokenEndpointResponse is responsible for setting return values and should only be executed if
	// the handler's HandleTokenEndpointRequest did not return ErrUnknownRequest.
	PopulateTokenEndpointResponse(ctx context.Context, requester AccessRequester, responder AccessResponder) error

	// HandleTokenEndpointRequest handles an authorize request. If the handler is not responsible for handling
	// the request, this method should return ErrUnknownRequest and otherwise handle the request.
	HandleTokenEndpointRequest(ctx context.Context, requester AccessRequester) error
}

type TokenEndpointHandlers 

type TokenEndpointHandlers []TokenEndpointHandler

TokenEndpointHandlers is a list of TokenEndpointHandler

func (*TokenEndpointHandlers) Append 

func (t *TokenEndpointHandlers) Append(h TokenEndpointHandler)

Append adds an TokenEndpointHandler to this list. Ignores duplicates based on reflect.TypeOf.

type TokenIntrospectionHandlers added in v0.4.0 

type TokenIntrospectionHandlers []TokenIntrospector

TokenIntrospectionHandlers is a list of TokenValidator

func (*TokenIntrospectionHandlers) Append added in v0.4.0 

func (t *TokenIntrospectionHandlers) Append(h TokenIntrospector)

Add adds an AccessTokenValidator to this list. Ignores duplicates based on reflect.TypeOf.

type TokenIntrospector added in v0.4.0 

type TokenIntrospector interface {
	IntrospectToken(ctx context.Context, token string, tokenType TokenType, accessRequest AccessRequester, scopes []string) (TokenType, error)
}

type TokenType added in v0.2.0 

type TokenType string
const (
	AccessToken   TokenType = "access_token"
	RefreshToken  TokenType = "refresh_token"
	AuthorizeCode TokenType = "authorize_code"
	IDToken       TokenType = "id_token"
)

Source Files

View all Source files

Directories

Path Synopsis
handler
oauth2
openid
pkce
token
hmac
jwt

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