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forgejo/models/perm/access/repo_permission.go
Gergely Nagy 5eeccecafc
[GITEA] Optionally allow anyone to edit Wikis
This is largely based on gitea#6312 by @ashimokawa, with updates and
fixes by myself, and incorporates the review feedback given in that pull
request, and more.

What this patch does is add a new "default_permissions" column to the
`repo_units` table (defaulting to read permission), adjusts the
permission checking code to take this into consideration, and then
exposes a setting that lets a repo administrator enable any user on a
Forgejo instance to edit the repo's wiki (effectively giving the wiki
unit of the repo "write" permissions by default).

By default, wikis will remain restricted to collaborators, but with the
new setting exposed, they can be turned into globally editable wikis.

Fixes Codeberg/Community#28.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit 4b74439922)
(cherry picked from commit 337cf62c10)
(cherry picked from commit b6786fdb32)
(cherry picked from commit a5d2829a10)

[GITEA] Optionally allow anyone to edit Wikis (squash) AddTokenAuth

(cherry picked from commit fed50cf72e)
(cherry picked from commit 42c55e494e)
(cherry picked from commit e3463bda47)
2024-02-05 16:09:42 +01:00

450 lines
14 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package access
import (
"context"
"fmt"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/organization"
perm_model "code.gitea.io/gitea/models/perm"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unit"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/log"
)
// Permission contains all the permissions related variables to a repository for a user
type Permission struct {
AccessMode perm_model.AccessMode
Units []*repo_model.RepoUnit
UnitsMode map[unit.Type]perm_model.AccessMode
}
// IsOwner returns true if current user is the owner of repository.
func (p *Permission) IsOwner() bool {
return p.AccessMode >= perm_model.AccessModeOwner
}
// IsAdmin returns true if current user has admin or higher access of repository.
func (p *Permission) IsAdmin() bool {
return p.AccessMode >= perm_model.AccessModeAdmin
}
// IsGloballyWriteable returns true if the unit is writeable by all users of the instance.
func (p *Permission) IsGloballyWriteable(unitType unit.Type) bool {
for _, u := range p.Units {
if u.Type == unitType {
return u.DefaultPermissions == repo_model.UnitAccessModeWrite
}
}
return false
}
// HasAccess returns true if the current user has at least read access to any unit of this repository
func (p *Permission) HasAccess() bool {
if p.UnitsMode == nil {
return p.AccessMode >= perm_model.AccessModeRead
}
return len(p.UnitsMode) > 0
}
// UnitAccessMode returns current user accessmode to the specify unit of the repository
func (p *Permission) UnitAccessMode(unitType unit.Type) perm_model.AccessMode {
if p.UnitsMode == nil {
for _, u := range p.Units {
if u.Type == unitType {
return p.AccessMode
}
}
return perm_model.AccessModeNone
}
return p.UnitsMode[unitType]
}
// CanAccess returns true if user has mode access to the unit of the repository
func (p *Permission) CanAccess(mode perm_model.AccessMode, unitType unit.Type) bool {
return p.UnitAccessMode(unitType) >= mode
}
// CanAccessAny returns true if user has mode access to any of the units of the repository
func (p *Permission) CanAccessAny(mode perm_model.AccessMode, unitTypes ...unit.Type) bool {
for _, u := range unitTypes {
if p.CanAccess(mode, u) {
return true
}
}
return false
}
// CanRead returns true if user could read to this unit
func (p *Permission) CanRead(unitType unit.Type) bool {
return p.CanAccess(perm_model.AccessModeRead, unitType)
}
// CanReadAny returns true if user has read access to any of the units of the repository
func (p *Permission) CanReadAny(unitTypes ...unit.Type) bool {
return p.CanAccessAny(perm_model.AccessModeRead, unitTypes...)
}
// CanReadIssuesOrPulls returns true if isPull is true and user could read pull requests and
// returns true if isPull is false and user could read to issues
func (p *Permission) CanReadIssuesOrPulls(isPull bool) bool {
if isPull {
return p.CanRead(unit.TypePullRequests)
}
return p.CanRead(unit.TypeIssues)
}
// CanWrite returns true if user could write to this unit
func (p *Permission) CanWrite(unitType unit.Type) bool {
return p.CanAccess(perm_model.AccessModeWrite, unitType)
}
// CanWriteIssuesOrPulls returns true if isPull is true and user could write to pull requests and
// returns true if isPull is false and user could write to issues
func (p *Permission) CanWriteIssuesOrPulls(isPull bool) bool {
if isPull {
return p.CanWrite(unit.TypePullRequests)
}
return p.CanWrite(unit.TypeIssues)
}
func (p *Permission) LogString() string {
format := "<Permission AccessMode=%s, %d Units, %d UnitsMode(s): [ "
args := []any{p.AccessMode.String(), len(p.Units), len(p.UnitsMode)}
for i, unit := range p.Units {
config := ""
if unit.Config != nil {
configBytes, err := unit.Config.ToDB()
config = string(configBytes)
if err != nil {
config = err.Error()
}
}
format += "\nUnits[%d]: ID: %d RepoID: %d Type: %s Config: %s"
args = append(args, i, unit.ID, unit.RepoID, unit.Type.LogString(), config)
}
for key, value := range p.UnitsMode {
format += "\nUnitMode[%-v]: %-v"
args = append(args, key.LogString(), value.LogString())
}
format += " ]>"
return fmt.Sprintf(format, args...)
}
// GetUserRepoPermission returns the user permissions to the repository
func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, user *user_model.User) (Permission, error) {
var perm Permission
if log.IsTrace() {
defer func() {
if user == nil {
log.Trace("Permission Loaded for anonymous user in %-v:\nPermissions: %-+v",
repo,
perm)
return
}
log.Trace("Permission Loaded for %-v in %-v:\nPermissions: %-+v",
user,
repo,
perm)
}()
}
// anonymous user visit private repo.
// TODO: anonymous user visit public unit of private repo???
if user == nil && repo.IsPrivate {
perm.AccessMode = perm_model.AccessModeNone
return perm, nil
}
var isCollaborator bool
var err error
if user != nil {
isCollaborator, err = repo_model.IsCollaborator(ctx, repo.ID, user.ID)
if err != nil {
return perm, err
}
}
if err := repo.LoadOwner(ctx); err != nil {
return perm, err
}
// Prevent strangers from checking out public repo of private organization/users
// Allow user if they are collaborator of a repo within a private user or a private organization but not a member of the organization itself
if !organization.HasOrgOrUserVisible(ctx, repo.Owner, user) && !isCollaborator {
perm.AccessMode = perm_model.AccessModeNone
return perm, nil
}
if err := repo.LoadUnits(ctx); err != nil {
return perm, err
}
perm.Units = repo.Units
// anonymous visit public repo
if user == nil {
perm.AccessMode = perm_model.AccessModeRead
return perm, nil
}
// Admin or the owner has super access to the repository
if user.IsAdmin || user.ID == repo.OwnerID {
perm.AccessMode = perm_model.AccessModeOwner
return perm, nil
}
// plain user
perm.AccessMode, err = accessLevel(ctx, user, repo)
if err != nil {
return perm, err
}
if err := repo.LoadOwner(ctx); err != nil {
return perm, err
}
if !repo.Owner.IsOrganization() {
// for a public repo, different repo units may have different default
// permissions for non-restricted users.
if !repo.IsPrivate && !user.IsRestricted && len(repo.Units) > 0 {
perm.UnitsMode = make(map[unit.Type]perm_model.AccessMode)
for _, u := range repo.Units {
if _, ok := perm.UnitsMode[u.Type]; !ok {
perm.UnitsMode[u.Type] = u.DefaultPermissions.ToAccessMode(perm.AccessMode)
}
}
}
return perm, nil
}
perm.UnitsMode = make(map[unit.Type]perm_model.AccessMode)
// Collaborators on organization
if isCollaborator {
for _, u := range repo.Units {
perm.UnitsMode[u.Type] = perm.AccessMode
}
}
// get units mode from teams
teams, err := organization.GetUserRepoTeams(ctx, repo.OwnerID, user.ID, repo.ID)
if err != nil {
return perm, err
}
// if user in an owner team
for _, team := range teams {
if team.AccessMode >= perm_model.AccessModeAdmin {
perm.AccessMode = perm_model.AccessModeOwner
perm.UnitsMode = nil
return perm, nil
}
}
for _, u := range repo.Units {
var found bool
for _, team := range teams {
teamMode := team.UnitAccessMode(ctx, u.Type)
if teamMode > perm_model.AccessModeNone {
m := perm.UnitsMode[u.Type]
if m < teamMode {
perm.UnitsMode[u.Type] = teamMode
}
found = true
}
}
// for a public repo on an organization, a non-restricted user should
// have the same permission on non-team defined units as the default
// permissions for the repo unit.
if !found && !repo.IsPrivate && !user.IsRestricted {
if _, ok := perm.UnitsMode[u.Type]; !ok {
perm.UnitsMode[u.Type] = u.DefaultPermissions.ToAccessMode(perm_model.AccessModeRead)
}
}
}
// remove no permission units
perm.Units = make([]*repo_model.RepoUnit, 0, len(repo.Units))
for t := range perm.UnitsMode {
for _, u := range repo.Units {
if u.Type == t {
perm.Units = append(perm.Units, u)
}
}
}
return perm, err
}
// IsUserRealRepoAdmin check if this user is real repo admin
func IsUserRealRepoAdmin(ctx context.Context, repo *repo_model.Repository, user *user_model.User) (bool, error) {
if repo.OwnerID == user.ID {
return true, nil
}
if err := repo.LoadOwner(ctx); err != nil {
return false, err
}
accessMode, err := accessLevel(ctx, user, repo)
if err != nil {
return false, err
}
return accessMode >= perm_model.AccessModeAdmin, nil
}
// IsUserRepoAdmin return true if user has admin right of a repo
func IsUserRepoAdmin(ctx context.Context, repo *repo_model.Repository, user *user_model.User) (bool, error) {
if user == nil || repo == nil {
return false, nil
}
if user.IsAdmin {
return true, nil
}
mode, err := accessLevel(ctx, user, repo)
if err != nil {
return false, err
}
if mode >= perm_model.AccessModeAdmin {
return true, nil
}
teams, err := organization.GetUserRepoTeams(ctx, repo.OwnerID, user.ID, repo.ID)
if err != nil {
return false, err
}
for _, team := range teams {
if team.AccessMode >= perm_model.AccessModeAdmin {
return true, nil
}
}
return false, nil
}
// AccessLevel returns the Access a user has to a repository. Will return NoneAccess if the
// user does not have access.
func AccessLevel(ctx context.Context, user *user_model.User, repo *repo_model.Repository) (perm_model.AccessMode, error) { //nolint
return AccessLevelUnit(ctx, user, repo, unit.TypeCode)
}
// AccessLevelUnit returns the Access a user has to a repository's. Will return NoneAccess if the
// user does not have access.
func AccessLevelUnit(ctx context.Context, user *user_model.User, repo *repo_model.Repository, unitType unit.Type) (perm_model.AccessMode, error) { //nolint
perm, err := GetUserRepoPermission(ctx, repo, user)
if err != nil {
return perm_model.AccessModeNone, err
}
return perm.UnitAccessMode(unitType), nil
}
// HasAccessUnit returns true if user has testMode to the unit of the repository
func HasAccessUnit(ctx context.Context, user *user_model.User, repo *repo_model.Repository, unitType unit.Type, testMode perm_model.AccessMode) (bool, error) {
mode, err := AccessLevelUnit(ctx, user, repo, unitType)
return testMode <= mode, err
}
// CanBeAssigned return true if user can be assigned to issue or pull requests in repo
// Currently any write access (code, issues or pr's) is assignable, to match assignee list in user interface.
// FIXME: user could send PullRequest also could be assigned???
func CanBeAssigned(ctx context.Context, user *user_model.User, repo *repo_model.Repository, _ bool) (bool, error) {
if user.IsOrganization() {
return false, fmt.Errorf("Organization can't be added as assignee [user_id: %d, repo_id: %d]", user.ID, repo.ID)
}
perm, err := GetUserRepoPermission(ctx, repo, user)
if err != nil {
return false, err
}
return perm.CanAccessAny(perm_model.AccessModeWrite, unit.TypeCode, unit.TypeIssues, unit.TypePullRequests), nil
}
// HasAccess returns true if user has access to repo
func HasAccess(ctx context.Context, userID int64, repo *repo_model.Repository) (bool, error) {
var user *user_model.User
var err error
if userID > 0 {
user, err = user_model.GetUserByID(ctx, userID)
if err != nil {
return false, err
}
}
perm, err := GetUserRepoPermission(ctx, repo, user)
if err != nil {
return false, err
}
return perm.HasAccess(), nil
}
// getUsersWithAccessMode returns users that have at least given access mode to the repository.
func getUsersWithAccessMode(ctx context.Context, repo *repo_model.Repository, mode perm_model.AccessMode) (_ []*user_model.User, err error) {
if err = repo.LoadOwner(ctx); err != nil {
return nil, err
}
e := db.GetEngine(ctx)
accesses := make([]*Access, 0, 10)
if err = e.Where("repo_id = ? AND mode >= ?", repo.ID, mode).Find(&accesses); err != nil {
return nil, err
}
// Leave a seat for owner itself to append later, but if owner is an organization
// and just waste 1 unit is cheaper than re-allocate memory once.
users := make([]*user_model.User, 0, len(accesses)+1)
if len(accesses) > 0 {
userIDs := make([]int64, len(accesses))
for i := 0; i < len(accesses); i++ {
userIDs[i] = accesses[i].UserID
}
if err = e.In("id", userIDs).Find(&users); err != nil {
return nil, err
}
}
if !repo.Owner.IsOrganization() {
users = append(users, repo.Owner)
}
return users, nil
}
// GetRepoReaders returns all users that have explicit read access or higher to the repository.
func GetRepoReaders(ctx context.Context, repo *repo_model.Repository) (_ []*user_model.User, err error) {
return getUsersWithAccessMode(ctx, repo, perm_model.AccessModeRead)
}
// GetRepoWriters returns all users that have write access to the repository.
func GetRepoWriters(ctx context.Context, repo *repo_model.Repository) (_ []*user_model.User, err error) {
return getUsersWithAccessMode(ctx, repo, perm_model.AccessModeWrite)
}
// IsRepoReader returns true if user has explicit read access or higher to the repository.
func IsRepoReader(ctx context.Context, repo *repo_model.Repository, userID int64) (bool, error) {
if repo.OwnerID == userID {
return true, nil
}
return db.GetEngine(ctx).Where("repo_id = ? AND user_id = ? AND mode >= ?", repo.ID, userID, perm_model.AccessModeRead).Get(&Access{})
}
// CheckRepoUnitUser check whether user could visit the unit of this repository
func CheckRepoUnitUser(ctx context.Context, repo *repo_model.Repository, user *user_model.User, unitType unit.Type) bool {
if user != nil && user.IsAdmin {
return true
}
perm, err := GetUserRepoPermission(ctx, repo, user)
if err != nil {
log.Error("GetUserRepoPermission: %w", err)
return false
}
return perm.CanRead(unitType)
}