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gitea/models/migrations/v1_20/v259.go

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Redesign Scoped Access Tokens (#24767) ## Changes - Adds the following high level access scopes, each with `read` and `write` levels: - `activitypub` - `admin` (hidden if user is not a site admin) - `misc` - `notification` - `organization` - `package` - `issue` - `repository` - `user` - Adds new middleware function `tokenRequiresScopes()` in addition to `reqToken()` - `tokenRequiresScopes()` is used for each high-level api section - _if_ a scoped token is present, checks that the required scope is included based on the section and HTTP method - `reqToken()` is used for individual routes - checks that required authentication is present (but does not check scope levels as this will already have been handled by `tokenRequiresScopes()` - Adds migration to convert old scoped access tokens to the new set of scopes - Updates the user interface for scope selection ### User interface example <img width="903" alt="Screen Shot 2023-05-31 at 1 56 55 PM" src="https://github.com/go-gitea/gitea/assets/23248839/654766ec-2143-4f59-9037-3b51600e32f3"> <img width="917" alt="Screen Shot 2023-05-31 at 1 56 43 PM" src="https://github.com/go-gitea/gitea/assets/23248839/1ad64081-012c-4a73-b393-66b30352654c"> ## tokenRequiresScopes Design Decision - `tokenRequiresScopes()` was added to more reliably cover api routes. For an incoming request, this function uses the given scope category (say `AccessTokenScopeCategoryOrganization`) and the HTTP method (say `DELETE`) and verifies that any scoped tokens in use include `delete:organization`. - `reqToken()` is used to enforce auth for individual routes that require it. If a scoped token is not present for a request, `tokenRequiresScopes()` will not return an error ## TODO - [x] Alphabetize scope categories - [x] Change 'public repos only' to a radio button (private vs public). Also expand this to organizations - [X] Disable token creation if no scopes selected. Alternatively, show warning - [x] `reqToken()` is missing from many `POST/DELETE` routes in the api. `tokenRequiresScopes()` only checks that a given token has the correct scope, `reqToken()` must be used to check that a token (or some other auth) is present. - _This should be addressed in this PR_ - [x] The migration should be reviewed very carefully in order to minimize access changes to existing user tokens. - _This should be addressed in this PR_ - [x] Link to api to swagger documentation, clarify what read/write/delete levels correspond to - [x] Review cases where more than one scope is needed as this directly deviates from the api definition. - _This should be addressed in this PR_ - For example: ```go m.Group("/users/{username}/orgs", func() { m.Get("", reqToken(), org.ListUserOrgs) m.Get("/{org}/permissions", reqToken(), org.GetUserOrgsPermissions) }, tokenRequiresScopes(auth_model.AccessTokenScopeCategoryUser, auth_model.AccessTokenScopeCategoryOrganization), context_service.UserAssignmentAPI()) ``` ## Future improvements - [ ] Add required scopes to swagger documentation - [ ] Redesign `reqToken()` to be opt-out rather than opt-in - [ ] Subdivide scopes like `repository` - [ ] Once a token is created, if it has no scopes, we should display text instead of an empty bullet point - [ ] If the 'public repos only' option is selected, should read categories be selected by default Closes #24501 Closes #24799 Co-authored-by: Jonathan Tran <jon@allspice.io> Co-authored-by: Kyle D <kdumontnu@gmail.com> Co-authored-by: silverwind <me@silverwind.io>
2023-06-04 14:57:16 -04:00
// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package v1_20 //nolint
import (
"fmt"
"strings"
"code.gitea.io/gitea/modules/log"
"xorm.io/xorm"
)
// unknownAccessTokenScope represents the scope for an access token that isn't
// known be an old token or a new token.
type unknownAccessTokenScope string
// AccessTokenScope represents the scope for an access token.
type AccessTokenScope string
// for all categories, write implies read
const (
AccessTokenScopeAll AccessTokenScope = "all"
AccessTokenScopePublicOnly AccessTokenScope = "public-only" // limited to public orgs/repos
AccessTokenScopeReadActivityPub AccessTokenScope = "read:activitypub"
AccessTokenScopeWriteActivityPub AccessTokenScope = "write:activitypub"
AccessTokenScopeReadAdmin AccessTokenScope = "read:admin"
AccessTokenScopeWriteAdmin AccessTokenScope = "write:admin"
AccessTokenScopeReadMisc AccessTokenScope = "read:misc"
AccessTokenScopeWriteMisc AccessTokenScope = "write:misc"
AccessTokenScopeReadNotification AccessTokenScope = "read:notification"
AccessTokenScopeWriteNotification AccessTokenScope = "write:notification"
AccessTokenScopeReadOrganization AccessTokenScope = "read:organization"
AccessTokenScopeWriteOrganization AccessTokenScope = "write:organization"
AccessTokenScopeReadPackage AccessTokenScope = "read:package"
AccessTokenScopeWritePackage AccessTokenScope = "write:package"
AccessTokenScopeReadIssue AccessTokenScope = "read:issue"
AccessTokenScopeWriteIssue AccessTokenScope = "write:issue"
AccessTokenScopeReadRepository AccessTokenScope = "read:repository"
AccessTokenScopeWriteRepository AccessTokenScope = "write:repository"
AccessTokenScopeReadUser AccessTokenScope = "read:user"
AccessTokenScopeWriteUser AccessTokenScope = "write:user"
)
// accessTokenScopeBitmap represents a bitmap of access token scopes.
type accessTokenScopeBitmap uint64
// Bitmap of each scope, including the child scopes.
const (
// AccessTokenScopeAllBits is the bitmap of all access token scopes
accessTokenScopeAllBits accessTokenScopeBitmap = accessTokenScopeWriteActivityPubBits |
accessTokenScopeWriteAdminBits | accessTokenScopeWriteMiscBits | accessTokenScopeWriteNotificationBits |
accessTokenScopeWriteOrganizationBits | accessTokenScopeWritePackageBits | accessTokenScopeWriteIssueBits |
accessTokenScopeWriteRepositoryBits | accessTokenScopeWriteUserBits
accessTokenScopePublicOnlyBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeReadActivityPubBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteActivityPubBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadActivityPubBits
accessTokenScopeReadAdminBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteAdminBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadAdminBits
accessTokenScopeReadMiscBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteMiscBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadMiscBits
accessTokenScopeReadNotificationBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteNotificationBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadNotificationBits
accessTokenScopeReadOrganizationBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteOrganizationBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadOrganizationBits
accessTokenScopeReadPackageBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWritePackageBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadPackageBits
accessTokenScopeReadIssueBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteIssueBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadIssueBits
accessTokenScopeReadRepositoryBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteRepositoryBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadRepositoryBits
accessTokenScopeReadUserBits accessTokenScopeBitmap = 1 << iota
accessTokenScopeWriteUserBits accessTokenScopeBitmap = 1<<iota | accessTokenScopeReadUserBits
// The current implementation only supports up to 64 token scopes.
// If we need to support > 64 scopes,
// refactoring the whole implementation in this file (and only this file) is needed.
)
// allAccessTokenScopes contains all access token scopes.
// The order is important: parent scope must precede child scopes.
var allAccessTokenScopes = []AccessTokenScope{
AccessTokenScopePublicOnly,
AccessTokenScopeWriteActivityPub, AccessTokenScopeReadActivityPub,
AccessTokenScopeWriteAdmin, AccessTokenScopeReadAdmin,
AccessTokenScopeWriteMisc, AccessTokenScopeReadMisc,
AccessTokenScopeWriteNotification, AccessTokenScopeReadNotification,
AccessTokenScopeWriteOrganization, AccessTokenScopeReadOrganization,
AccessTokenScopeWritePackage, AccessTokenScopeReadPackage,
AccessTokenScopeWriteIssue, AccessTokenScopeReadIssue,
AccessTokenScopeWriteRepository, AccessTokenScopeReadRepository,
AccessTokenScopeWriteUser, AccessTokenScopeReadUser,
}
// allAccessTokenScopeBits contains all access token scopes.
var allAccessTokenScopeBits = map[AccessTokenScope]accessTokenScopeBitmap{
AccessTokenScopeAll: accessTokenScopeAllBits,
AccessTokenScopePublicOnly: accessTokenScopePublicOnlyBits,
AccessTokenScopeReadActivityPub: accessTokenScopeReadActivityPubBits,
AccessTokenScopeWriteActivityPub: accessTokenScopeWriteActivityPubBits,
AccessTokenScopeReadAdmin: accessTokenScopeReadAdminBits,
AccessTokenScopeWriteAdmin: accessTokenScopeWriteAdminBits,
AccessTokenScopeReadMisc: accessTokenScopeReadMiscBits,
AccessTokenScopeWriteMisc: accessTokenScopeWriteMiscBits,
AccessTokenScopeReadNotification: accessTokenScopeReadNotificationBits,
AccessTokenScopeWriteNotification: accessTokenScopeWriteNotificationBits,
AccessTokenScopeReadOrganization: accessTokenScopeReadOrganizationBits,
AccessTokenScopeWriteOrganization: accessTokenScopeWriteOrganizationBits,
AccessTokenScopeReadPackage: accessTokenScopeReadPackageBits,
AccessTokenScopeWritePackage: accessTokenScopeWritePackageBits,
AccessTokenScopeReadIssue: accessTokenScopeReadIssueBits,
AccessTokenScopeWriteIssue: accessTokenScopeWriteIssueBits,
AccessTokenScopeReadRepository: accessTokenScopeReadRepositoryBits,
AccessTokenScopeWriteRepository: accessTokenScopeWriteRepositoryBits,
AccessTokenScopeReadUser: accessTokenScopeReadUserBits,
AccessTokenScopeWriteUser: accessTokenScopeWriteUserBits,
}
// hasScope returns true if the string has the given scope
func (bitmap accessTokenScopeBitmap) hasScope(scope AccessTokenScope) (bool, error) {
expectedBits, ok := allAccessTokenScopeBits[scope]
if !ok {
return false, fmt.Errorf("invalid access token scope: %s", scope)
}
return bitmap&expectedBits == expectedBits, nil
}
// toScope returns a normalized scope string without any duplicates.
func (bitmap accessTokenScopeBitmap) toScope(unknownScopes *[]unknownAccessTokenScope) AccessTokenScope {
var scopes []string
// Preserve unknown scopes, and put them at the beginning so that it's clear
// when debugging.
if unknownScopes != nil {
for _, unknownScope := range *unknownScopes {
scopes = append(scopes, string(unknownScope))
}
}
// iterate over all scopes, and reconstruct the bitmap
// if the reconstructed bitmap doesn't change, then the scope is already included
var reconstruct accessTokenScopeBitmap
for _, singleScope := range allAccessTokenScopes {
// no need for error checking here, since we know the scope is valid
if ok, _ := bitmap.hasScope(singleScope); ok {
current := reconstruct | allAccessTokenScopeBits[singleScope]
if current == reconstruct {
continue
}
reconstruct = current
scopes = append(scopes, string(singleScope))
}
}
scope := AccessTokenScope(strings.Join(scopes, ","))
scope = AccessTokenScope(strings.ReplaceAll(
string(scope),
"write:activitypub,write:admin,write:misc,write:notification,write:organization,write:package,write:issue,write:repository,write:user",
"all",
))
return scope
}
// parse the scope string into a bitmap, thus removing possible duplicates.
func (s AccessTokenScope) parse() (accessTokenScopeBitmap, *[]unknownAccessTokenScope) {
var bitmap accessTokenScopeBitmap
var unknownScopes []unknownAccessTokenScope
// The following is the more performant equivalent of 'for _, v := range strings.Split(remainingScope, ",")' as this is hot code
remainingScopes := string(s)
for len(remainingScopes) > 0 {
i := strings.IndexByte(remainingScopes, ',')
var v string
if i < 0 {
v = remainingScopes
remainingScopes = ""
} else if i+1 >= len(remainingScopes) {
v = remainingScopes[:i]
remainingScopes = ""
} else {
v = remainingScopes[:i]
remainingScopes = remainingScopes[i+1:]
}
singleScope := AccessTokenScope(v)
if singleScope == "" {
continue
}
if singleScope == AccessTokenScopeAll {
bitmap |= accessTokenScopeAllBits
continue
}
bits, ok := allAccessTokenScopeBits[singleScope]
if !ok {
unknownScopes = append(unknownScopes, unknownAccessTokenScope(string(singleScope)))
}
bitmap |= bits
}
return bitmap, &unknownScopes
}
// NormalizePreservingUnknown returns a normalized scope string without any
// duplicates. Unknown scopes are included.
func (s AccessTokenScope) NormalizePreservingUnknown() AccessTokenScope {
bitmap, unknownScopes := s.parse()
return bitmap.toScope(unknownScopes)
}
// OldAccessTokenScope represents the scope for an access token.
type OldAccessTokenScope string
const (
OldAccessTokenScopeAll OldAccessTokenScope = "all"
OldAccessTokenScopeRepo OldAccessTokenScope = "repo"
OldAccessTokenScopeRepoStatus OldAccessTokenScope = "repo:status"
OldAccessTokenScopePublicRepo OldAccessTokenScope = "public_repo"
OldAccessTokenScopeAdminOrg OldAccessTokenScope = "admin:org"
OldAccessTokenScopeWriteOrg OldAccessTokenScope = "write:org"
OldAccessTokenScopeReadOrg OldAccessTokenScope = "read:org"
OldAccessTokenScopeAdminPublicKey OldAccessTokenScope = "admin:public_key"
OldAccessTokenScopeWritePublicKey OldAccessTokenScope = "write:public_key"
OldAccessTokenScopeReadPublicKey OldAccessTokenScope = "read:public_key"
OldAccessTokenScopeAdminRepoHook OldAccessTokenScope = "admin:repo_hook"
OldAccessTokenScopeWriteRepoHook OldAccessTokenScope = "write:repo_hook"
OldAccessTokenScopeReadRepoHook OldAccessTokenScope = "read:repo_hook"
OldAccessTokenScopeAdminOrgHook OldAccessTokenScope = "admin:org_hook"
OldAccessTokenScopeNotification OldAccessTokenScope = "notification"
OldAccessTokenScopeUser OldAccessTokenScope = "user"
OldAccessTokenScopeReadUser OldAccessTokenScope = "read:user"
OldAccessTokenScopeUserEmail OldAccessTokenScope = "user:email"
OldAccessTokenScopeUserFollow OldAccessTokenScope = "user:follow"
OldAccessTokenScopeDeleteRepo OldAccessTokenScope = "delete_repo"
OldAccessTokenScopePackage OldAccessTokenScope = "package"
OldAccessTokenScopeWritePackage OldAccessTokenScope = "write:package"
OldAccessTokenScopeReadPackage OldAccessTokenScope = "read:package"
OldAccessTokenScopeDeletePackage OldAccessTokenScope = "delete:package"
OldAccessTokenScopeAdminGPGKey OldAccessTokenScope = "admin:gpg_key"
OldAccessTokenScopeWriteGPGKey OldAccessTokenScope = "write:gpg_key"
OldAccessTokenScopeReadGPGKey OldAccessTokenScope = "read:gpg_key"
OldAccessTokenScopeAdminApplication OldAccessTokenScope = "admin:application"
OldAccessTokenScopeWriteApplication OldAccessTokenScope = "write:application"
OldAccessTokenScopeReadApplication OldAccessTokenScope = "read:application"
OldAccessTokenScopeSudo OldAccessTokenScope = "sudo"
)
var accessTokenScopeMap = map[OldAccessTokenScope][]AccessTokenScope{
OldAccessTokenScopeAll: {AccessTokenScopeAll},
OldAccessTokenScopeRepo: {AccessTokenScopeWriteRepository},
OldAccessTokenScopeRepoStatus: {AccessTokenScopeWriteRepository},
OldAccessTokenScopePublicRepo: {AccessTokenScopePublicOnly, AccessTokenScopeWriteRepository},
OldAccessTokenScopeAdminOrg: {AccessTokenScopeWriteOrganization},
OldAccessTokenScopeWriteOrg: {AccessTokenScopeWriteOrganization},
OldAccessTokenScopeReadOrg: {AccessTokenScopeReadOrganization},
OldAccessTokenScopeAdminPublicKey: {AccessTokenScopeWriteUser},
OldAccessTokenScopeWritePublicKey: {AccessTokenScopeWriteUser},
OldAccessTokenScopeReadPublicKey: {AccessTokenScopeReadUser},
OldAccessTokenScopeAdminRepoHook: {AccessTokenScopeWriteRepository},
OldAccessTokenScopeWriteRepoHook: {AccessTokenScopeWriteRepository},
OldAccessTokenScopeReadRepoHook: {AccessTokenScopeReadRepository},
OldAccessTokenScopeAdminOrgHook: {AccessTokenScopeWriteOrganization},
OldAccessTokenScopeNotification: {AccessTokenScopeWriteNotification},
OldAccessTokenScopeUser: {AccessTokenScopeWriteUser},
OldAccessTokenScopeReadUser: {AccessTokenScopeReadUser},
OldAccessTokenScopeUserEmail: {AccessTokenScopeWriteUser},
OldAccessTokenScopeUserFollow: {AccessTokenScopeWriteUser},
OldAccessTokenScopeDeleteRepo: {AccessTokenScopeWriteRepository},
OldAccessTokenScopePackage: {AccessTokenScopeWritePackage},
OldAccessTokenScopeWritePackage: {AccessTokenScopeWritePackage},
OldAccessTokenScopeReadPackage: {AccessTokenScopeReadPackage},
OldAccessTokenScopeDeletePackage: {AccessTokenScopeWritePackage},
OldAccessTokenScopeAdminGPGKey: {AccessTokenScopeWriteUser},
OldAccessTokenScopeWriteGPGKey: {AccessTokenScopeWriteUser},
OldAccessTokenScopeReadGPGKey: {AccessTokenScopeReadUser},
OldAccessTokenScopeAdminApplication: {AccessTokenScopeWriteUser},
OldAccessTokenScopeWriteApplication: {AccessTokenScopeWriteUser},
OldAccessTokenScopeReadApplication: {AccessTokenScopeReadUser},
OldAccessTokenScopeSudo: {AccessTokenScopeWriteAdmin},
}
type AccessToken struct {
ID int64 `xorm:"pk autoincr"`
Scope string
}
func ConvertScopedAccessTokens(x *xorm.Engine) error {
var tokens []*AccessToken
if err := x.Find(&tokens); err != nil {
return err
}
for _, token := range tokens {
var scopes []string
allNewScopesMap := make(map[AccessTokenScope]bool)
for _, oldScope := range strings.Split(token.Scope, ",") {
if newScopes, exists := accessTokenScopeMap[OldAccessTokenScope(oldScope)]; exists {
for _, newScope := range newScopes {
allNewScopesMap[newScope] = true
}
} else {
log.Debug("access token scope not recognized as old token scope %s; preserving it", oldScope)
scopes = append(scopes, oldScope)
}
}
for s := range allNewScopesMap {
scopes = append(scopes, string(s))
}
scope := AccessTokenScope(strings.Join(scopes, ","))
// normalize the scope
normScope := scope.NormalizePreservingUnknown()
token.Scope = string(normScope)
// update the db entry with the new scope
if _, err := x.Cols("scope").ID(token.ID).Update(token); err != nil {
return err
}
}
return nil
}