aa23f477b7
- Switch to use `CryptoRandomBytes` instead of `CryptoRandomString`, OAuth's secrets are copied pasted and don't need to avoid dubious characters etc. - `CryptoRandomBytes` gives  `CryptoRandomString` gives  possible states. - Add a prefix, such that code scanners can easily grep these in source code. - 32 Bytes + prefix
579 lines
18 KiB
Go
579 lines
18 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package auth
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import (
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"crypto/sha256"
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"encoding/base32"
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"encoding/base64"
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"fmt"
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"net/url"
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"strings"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/util"
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uuid "github.com/google/uuid"
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"golang.org/x/crypto/bcrypt"
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"xorm.io/xorm"
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)
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// OAuth2Application represents an OAuth2 client (RFC 6749)
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type OAuth2Application struct {
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ID int64 `xorm:"pk autoincr"`
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UID int64 `xorm:"INDEX"`
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Name string
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ClientID string `xorm:"unique"`
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ClientSecret string
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RedirectURIs []string `xorm:"redirect_uris JSON TEXT"`
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CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
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UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
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}
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func init() {
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db.RegisterModel(new(OAuth2Application))
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db.RegisterModel(new(OAuth2AuthorizationCode))
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db.RegisterModel(new(OAuth2Grant))
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}
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// TableName sets the table name to `oauth2_application`
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func (app *OAuth2Application) TableName() string {
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return "oauth2_application"
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}
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// PrimaryRedirectURI returns the first redirect uri or an empty string if empty
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func (app *OAuth2Application) PrimaryRedirectURI() string {
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if len(app.RedirectURIs) == 0 {
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return ""
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}
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return app.RedirectURIs[0]
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}
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// ContainsRedirectURI checks if redirectURI is allowed for app
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func (app *OAuth2Application) ContainsRedirectURI(redirectURI string) bool {
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return util.IsStringInSlice(redirectURI, app.RedirectURIs, true)
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}
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// Base32 characters, but lowercased.
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const lowerBase32Chars = "abcdefghijklmnopqrstuvwxyz234567"
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// base32 encoder that uses lowered characters without padding.
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var base32Lower = base32.NewEncoding(lowerBase32Chars).WithPadding(base32.NoPadding)
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// GenerateClientSecret will generate the client secret and returns the plaintext and saves the hash at the database
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func (app *OAuth2Application) GenerateClientSecret() (string, error) {
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rBytes, err := util.CryptoRandomBytes(32)
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if err != nil {
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return "", err
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}
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// Add a prefix to the base32, this is in order to make it easier
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// for code scanners to grab sensitive tokens.
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clientSecret := "gto_" + base32Lower.EncodeToString(rBytes)
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hashedSecret, err := bcrypt.GenerateFromPassword([]byte(clientSecret), bcrypt.DefaultCost)
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if err != nil {
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return "", err
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}
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app.ClientSecret = string(hashedSecret)
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if _, err := db.GetEngine(db.DefaultContext).ID(app.ID).Cols("client_secret").Update(app); err != nil {
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return "", err
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}
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return clientSecret, nil
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}
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// ValidateClientSecret validates the given secret by the hash saved in database
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func (app *OAuth2Application) ValidateClientSecret(secret []byte) bool {
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return bcrypt.CompareHashAndPassword([]byte(app.ClientSecret), secret) == nil
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}
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// GetGrantByUserID returns a OAuth2Grant by its user and application ID
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func (app *OAuth2Application) GetGrantByUserID(userID int64) (*OAuth2Grant, error) {
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return app.getGrantByUserID(db.GetEngine(db.DefaultContext), userID)
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}
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func (app *OAuth2Application) getGrantByUserID(e db.Engine, userID int64) (grant *OAuth2Grant, err error) {
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grant = new(OAuth2Grant)
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if has, err := e.Where("user_id = ? AND application_id = ?", userID, app.ID).Get(grant); err != nil {
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return nil, err
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} else if !has {
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return nil, nil
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}
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return grant, nil
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}
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// CreateGrant generates a grant for an user
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func (app *OAuth2Application) CreateGrant(userID int64, scope string) (*OAuth2Grant, error) {
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return app.createGrant(db.GetEngine(db.DefaultContext), userID, scope)
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}
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func (app *OAuth2Application) createGrant(e db.Engine, userID int64, scope string) (*OAuth2Grant, error) {
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grant := &OAuth2Grant{
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ApplicationID: app.ID,
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UserID: userID,
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Scope: scope,
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}
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_, err := e.Insert(grant)
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if err != nil {
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return nil, err
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}
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return grant, nil
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}
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// GetOAuth2ApplicationByClientID returns the oauth2 application with the given client_id. Returns an error if not found.
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func GetOAuth2ApplicationByClientID(clientID string) (app *OAuth2Application, err error) {
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return getOAuth2ApplicationByClientID(db.GetEngine(db.DefaultContext), clientID)
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}
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func getOAuth2ApplicationByClientID(e db.Engine, clientID string) (app *OAuth2Application, err error) {
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app = new(OAuth2Application)
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has, err := e.Where("client_id = ?", clientID).Get(app)
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if !has {
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return nil, ErrOAuthClientIDInvalid{ClientID: clientID}
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}
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return
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}
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// GetOAuth2ApplicationByID returns the oauth2 application with the given id. Returns an error if not found.
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func GetOAuth2ApplicationByID(id int64) (app *OAuth2Application, err error) {
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return getOAuth2ApplicationByID(db.GetEngine(db.DefaultContext), id)
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}
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func getOAuth2ApplicationByID(e db.Engine, id int64) (app *OAuth2Application, err error) {
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app = new(OAuth2Application)
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has, err := e.ID(id).Get(app)
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if err != nil {
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return nil, err
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}
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if !has {
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return nil, ErrOAuthApplicationNotFound{ID: id}
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}
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return app, nil
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}
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// GetOAuth2ApplicationsByUserID returns all oauth2 applications owned by the user
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func GetOAuth2ApplicationsByUserID(userID int64) (apps []*OAuth2Application, err error) {
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return getOAuth2ApplicationsByUserID(db.GetEngine(db.DefaultContext), userID)
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}
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func getOAuth2ApplicationsByUserID(e db.Engine, userID int64) (apps []*OAuth2Application, err error) {
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apps = make([]*OAuth2Application, 0)
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err = e.Where("uid = ?", userID).Find(&apps)
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return
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}
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// CreateOAuth2ApplicationOptions holds options to create an oauth2 application
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type CreateOAuth2ApplicationOptions struct {
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Name string
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UserID int64
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RedirectURIs []string
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}
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// CreateOAuth2Application inserts a new oauth2 application
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func CreateOAuth2Application(opts CreateOAuth2ApplicationOptions) (*OAuth2Application, error) {
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return createOAuth2Application(db.GetEngine(db.DefaultContext), opts)
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}
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func createOAuth2Application(e db.Engine, opts CreateOAuth2ApplicationOptions) (*OAuth2Application, error) {
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clientID := uuid.New().String()
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app := &OAuth2Application{
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UID: opts.UserID,
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Name: opts.Name,
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ClientID: clientID,
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RedirectURIs: opts.RedirectURIs,
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}
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if _, err := e.Insert(app); err != nil {
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return nil, err
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}
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return app, nil
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}
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// UpdateOAuth2ApplicationOptions holds options to update an oauth2 application
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type UpdateOAuth2ApplicationOptions struct {
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ID int64
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Name string
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UserID int64
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RedirectURIs []string
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}
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// UpdateOAuth2Application updates an oauth2 application
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func UpdateOAuth2Application(opts UpdateOAuth2ApplicationOptions) (*OAuth2Application, error) {
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ctx, committer, err := db.TxContext()
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if err != nil {
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return nil, err
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}
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defer committer.Close()
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sess := db.GetEngine(ctx)
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app, err := getOAuth2ApplicationByID(sess, opts.ID)
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if err != nil {
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return nil, err
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}
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if app.UID != opts.UserID {
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return nil, fmt.Errorf("UID mismatch")
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}
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app.Name = opts.Name
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app.RedirectURIs = opts.RedirectURIs
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if err = updateOAuth2Application(sess, app); err != nil {
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return nil, err
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}
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app.ClientSecret = ""
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return app, committer.Commit()
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}
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func updateOAuth2Application(e db.Engine, app *OAuth2Application) error {
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if _, err := e.ID(app.ID).Update(app); err != nil {
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return err
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}
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return nil
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}
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func deleteOAuth2Application(sess db.Engine, id, userid int64) error {
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if deleted, err := sess.Delete(&OAuth2Application{ID: id, UID: userid}); err != nil {
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return err
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} else if deleted == 0 {
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return ErrOAuthApplicationNotFound{ID: id}
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}
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codes := make([]*OAuth2AuthorizationCode, 0)
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// delete correlating auth codes
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if err := sess.Join("INNER", "oauth2_grant",
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"oauth2_authorization_code.grant_id = oauth2_grant.id AND oauth2_grant.application_id = ?", id).Find(&codes); err != nil {
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return err
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}
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codeIDs := make([]int64, 0)
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for _, grant := range codes {
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codeIDs = append(codeIDs, grant.ID)
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}
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if _, err := sess.In("id", codeIDs).Delete(new(OAuth2AuthorizationCode)); err != nil {
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return err
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}
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if _, err := sess.Where("application_id = ?", id).Delete(new(OAuth2Grant)); err != nil {
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return err
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}
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return nil
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}
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// DeleteOAuth2Application deletes the application with the given id and the grants and auth codes related to it. It checks if the userid was the creator of the app.
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func DeleteOAuth2Application(id, userid int64) error {
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ctx, committer, err := db.TxContext()
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if err != nil {
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return err
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}
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defer committer.Close()
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if err := deleteOAuth2Application(db.GetEngine(ctx), id, userid); err != nil {
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return err
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}
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return committer.Commit()
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}
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// ListOAuth2Applications returns a list of oauth2 applications belongs to given user.
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func ListOAuth2Applications(uid int64, listOptions db.ListOptions) ([]*OAuth2Application, int64, error) {
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sess := db.GetEngine(db.DefaultContext).
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Where("uid=?", uid).
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Desc("id")
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if listOptions.Page != 0 {
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sess = db.SetSessionPagination(sess, &listOptions)
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apps := make([]*OAuth2Application, 0, listOptions.PageSize)
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total, err := sess.FindAndCount(&apps)
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return apps, total, err
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}
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apps := make([]*OAuth2Application, 0, 5)
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total, err := sess.FindAndCount(&apps)
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return apps, total, err
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}
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//////////////////////////////////////////////////////
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// OAuth2AuthorizationCode is a code to obtain an access token in combination with the client secret once. It has a limited lifetime.
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type OAuth2AuthorizationCode struct {
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ID int64 `xorm:"pk autoincr"`
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Grant *OAuth2Grant `xorm:"-"`
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GrantID int64
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Code string `xorm:"INDEX unique"`
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CodeChallenge string
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CodeChallengeMethod string
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RedirectURI string
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ValidUntil timeutil.TimeStamp `xorm:"index"`
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}
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// TableName sets the table name to `oauth2_authorization_code`
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func (code *OAuth2AuthorizationCode) TableName() string {
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return "oauth2_authorization_code"
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}
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// GenerateRedirectURI generates a redirect URI for a successful authorization request. State will be used if not empty.
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func (code *OAuth2AuthorizationCode) GenerateRedirectURI(state string) (redirect *url.URL, err error) {
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if redirect, err = url.Parse(code.RedirectURI); err != nil {
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return
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}
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q := redirect.Query()
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if state != "" {
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q.Set("state", state)
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}
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q.Set("code", code.Code)
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redirect.RawQuery = q.Encode()
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return
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}
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// Invalidate deletes the auth code from the database to invalidate this code
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func (code *OAuth2AuthorizationCode) Invalidate() error {
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return code.invalidate(db.GetEngine(db.DefaultContext))
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}
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func (code *OAuth2AuthorizationCode) invalidate(e db.Engine) error {
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_, err := e.Delete(code)
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return err
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}
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// ValidateCodeChallenge validates the given verifier against the saved code challenge. This is part of the PKCE implementation.
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func (code *OAuth2AuthorizationCode) ValidateCodeChallenge(verifier string) bool {
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return code.validateCodeChallenge(verifier)
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}
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func (code *OAuth2AuthorizationCode) validateCodeChallenge(verifier string) bool {
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switch code.CodeChallengeMethod {
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case "S256":
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// base64url(SHA256(verifier)) see https://tools.ietf.org/html/rfc7636#section-4.6
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h := sha256.Sum256([]byte(verifier))
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hashedVerifier := base64.RawURLEncoding.EncodeToString(h[:])
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return hashedVerifier == code.CodeChallenge
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case "plain":
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return verifier == code.CodeChallenge
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case "":
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return true
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default:
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// unsupported method -> return false
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return false
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}
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}
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// GetOAuth2AuthorizationByCode returns an authorization by its code
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func GetOAuth2AuthorizationByCode(code string) (*OAuth2AuthorizationCode, error) {
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return getOAuth2AuthorizationByCode(db.GetEngine(db.DefaultContext), code)
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}
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func getOAuth2AuthorizationByCode(e db.Engine, code string) (auth *OAuth2AuthorizationCode, err error) {
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auth = new(OAuth2AuthorizationCode)
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if has, err := e.Where("code = ?", code).Get(auth); err != nil {
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return nil, err
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} else if !has {
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return nil, nil
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}
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auth.Grant = new(OAuth2Grant)
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if has, err := e.ID(auth.GrantID).Get(auth.Grant); err != nil {
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return nil, err
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} else if !has {
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return nil, nil
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}
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return auth, nil
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}
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//////////////////////////////////////////////////////
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// OAuth2Grant represents the permission of an user for a specific application to access resources
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type OAuth2Grant struct {
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ID int64 `xorm:"pk autoincr"`
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UserID int64 `xorm:"INDEX unique(user_application)"`
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Application *OAuth2Application `xorm:"-"`
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ApplicationID int64 `xorm:"INDEX unique(user_application)"`
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Counter int64 `xorm:"NOT NULL DEFAULT 1"`
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Scope string `xorm:"TEXT"`
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Nonce string `xorm:"TEXT"`
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CreatedUnix timeutil.TimeStamp `xorm:"created"`
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UpdatedUnix timeutil.TimeStamp `xorm:"updated"`
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}
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// TableName sets the table name to `oauth2_grant`
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func (grant *OAuth2Grant) TableName() string {
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return "oauth2_grant"
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}
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// GenerateNewAuthorizationCode generates a new authorization code for a grant and saves it to the database
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func (grant *OAuth2Grant) GenerateNewAuthorizationCode(redirectURI, codeChallenge, codeChallengeMethod string) (*OAuth2AuthorizationCode, error) {
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return grant.generateNewAuthorizationCode(db.GetEngine(db.DefaultContext), redirectURI, codeChallenge, codeChallengeMethod)
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}
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func (grant *OAuth2Grant) generateNewAuthorizationCode(e db.Engine, redirectURI, codeChallenge, codeChallengeMethod string) (code *OAuth2AuthorizationCode, err error) {
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rBytes, err := util.CryptoRandomBytes(32)
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if err != nil {
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return &OAuth2AuthorizationCode{}, err
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}
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// Add a prefix to the base32, this is in order to make it easier
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// for code scanners to grab sensitive tokens.
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codeSecret := "gta_" + base32Lower.EncodeToString(rBytes)
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code = &OAuth2AuthorizationCode{
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Grant: grant,
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GrantID: grant.ID,
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RedirectURI: redirectURI,
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Code: codeSecret,
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CodeChallenge: codeChallenge,
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CodeChallengeMethod: codeChallengeMethod,
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}
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if _, err := e.Insert(code); err != nil {
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return nil, err
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}
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return code, nil
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}
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// IncreaseCounter increases the counter and updates the grant
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func (grant *OAuth2Grant) IncreaseCounter() error {
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return grant.increaseCount(db.GetEngine(db.DefaultContext))
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}
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func (grant *OAuth2Grant) increaseCount(e db.Engine) error {
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_, err := e.ID(grant.ID).Incr("counter").Update(new(OAuth2Grant))
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if err != nil {
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return err
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}
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updatedGrant, err := getOAuth2GrantByID(e, grant.ID)
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if err != nil {
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return err
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}
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grant.Counter = updatedGrant.Counter
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return nil
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}
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// ScopeContains returns true if the grant scope contains the specified scope
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func (grant *OAuth2Grant) ScopeContains(scope string) bool {
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for _, currentScope := range strings.Split(grant.Scope, " ") {
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if scope == currentScope {
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return true
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}
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}
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return false
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}
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// SetNonce updates the current nonce value of a grant
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func (grant *OAuth2Grant) SetNonce(nonce string) error {
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return grant.setNonce(db.GetEngine(db.DefaultContext), nonce)
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}
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func (grant *OAuth2Grant) setNonce(e db.Engine, nonce string) error {
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grant.Nonce = nonce
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_, err := e.ID(grant.ID).Cols("nonce").Update(grant)
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if err != nil {
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return err
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}
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return nil
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}
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// GetOAuth2GrantByID returns the grant with the given ID
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func GetOAuth2GrantByID(id int64) (*OAuth2Grant, error) {
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return getOAuth2GrantByID(db.GetEngine(db.DefaultContext), id)
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}
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func getOAuth2GrantByID(e db.Engine, id int64) (grant *OAuth2Grant, err error) {
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grant = new(OAuth2Grant)
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if has, err := e.ID(id).Get(grant); err != nil {
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return nil, err
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} else if !has {
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return nil, nil
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}
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return
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}
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// GetOAuth2GrantsByUserID lists all grants of a certain user
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func GetOAuth2GrantsByUserID(uid int64) ([]*OAuth2Grant, error) {
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return getOAuth2GrantsByUserID(db.GetEngine(db.DefaultContext), uid)
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}
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|
|
func getOAuth2GrantsByUserID(e db.Engine, uid int64) ([]*OAuth2Grant, error) {
|
|
type joinedOAuth2Grant struct {
|
|
Grant *OAuth2Grant `xorm:"extends"`
|
|
Application *OAuth2Application `xorm:"extends"`
|
|
}
|
|
var results *xorm.Rows
|
|
var err error
|
|
if results, err = e.
|
|
Table("oauth2_grant").
|
|
Where("user_id = ?", uid).
|
|
Join("INNER", "oauth2_application", "application_id = oauth2_application.id").
|
|
Rows(new(joinedOAuth2Grant)); err != nil {
|
|
return nil, err
|
|
}
|
|
defer results.Close()
|
|
grants := make([]*OAuth2Grant, 0)
|
|
for results.Next() {
|
|
joinedGrant := new(joinedOAuth2Grant)
|
|
if err := results.Scan(joinedGrant); err != nil {
|
|
return nil, err
|
|
}
|
|
joinedGrant.Grant.Application = joinedGrant.Application
|
|
grants = append(grants, joinedGrant.Grant)
|
|
}
|
|
return grants, nil
|
|
}
|
|
|
|
// RevokeOAuth2Grant deletes the grant with grantID and userID
|
|
func RevokeOAuth2Grant(grantID, userID int64) error {
|
|
return revokeOAuth2Grant(db.GetEngine(db.DefaultContext), grantID, userID)
|
|
}
|
|
|
|
func revokeOAuth2Grant(e db.Engine, grantID, userID int64) error {
|
|
_, err := e.Delete(&OAuth2Grant{ID: grantID, UserID: userID})
|
|
return err
|
|
}
|
|
|
|
// ErrOAuthClientIDInvalid will be thrown if client id cannot be found
|
|
type ErrOAuthClientIDInvalid struct {
|
|
ClientID string
|
|
}
|
|
|
|
// IsErrOauthClientIDInvalid checks if an error is a ErrReviewNotExist.
|
|
func IsErrOauthClientIDInvalid(err error) bool {
|
|
_, ok := err.(ErrOAuthClientIDInvalid)
|
|
return ok
|
|
}
|
|
|
|
// Error returns the error message
|
|
func (err ErrOAuthClientIDInvalid) Error() string {
|
|
return fmt.Sprintf("Client ID invalid [Client ID: %s]", err.ClientID)
|
|
}
|
|
|
|
// ErrOAuthApplicationNotFound will be thrown if id cannot be found
|
|
type ErrOAuthApplicationNotFound struct {
|
|
ID int64
|
|
}
|
|
|
|
// IsErrOAuthApplicationNotFound checks if an error is a ErrReviewNotExist.
|
|
func IsErrOAuthApplicationNotFound(err error) bool {
|
|
_, ok := err.(ErrOAuthApplicationNotFound)
|
|
return ok
|
|
}
|
|
|
|
// Error returns the error message
|
|
func (err ErrOAuthApplicationNotFound) Error() string {
|
|
return fmt.Sprintf("OAuth application not found [ID: %d]", err.ID)
|
|
}
|
|
|
|
// GetActiveOAuth2ProviderSources returns all actived LoginOAuth2 sources
|
|
func GetActiveOAuth2ProviderSources() ([]*Source, error) {
|
|
sources := make([]*Source, 0, 1)
|
|
if err := db.GetEngine(db.DefaultContext).Where("is_active = ? and type = ?", true, OAuth2).Find(&sources); err != nil {
|
|
return nil, err
|
|
}
|
|
return sources, nil
|
|
}
|
|
|
|
// GetActiveOAuth2SourceByName returns a OAuth2 AuthSource based on the given name
|
|
func GetActiveOAuth2SourceByName(name string) (*Source, error) {
|
|
authSource := new(Source)
|
|
has, err := db.GetEngine(db.DefaultContext).Where("name = ? and type = ? and is_active = ?", name, OAuth2, true).Get(authSource)
|
|
if !has || err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return authSource, nil
|
|
}
|