forgejo/models/access.go
zeripath 9302eba971
DBContext is just a Context (#17100)
* DBContext is just a Context

This PR removes some of the specialness from the DBContext and makes it context
This allows us to simplify the GetEngine code to wrap around any context in future
and means that we can change our loadRepo(e Engine) functions to simply take contexts.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix unit tests

Signed-off-by: Andrew Thornton <art27@cantab.net>

* another place that needs to set the initial context

Signed-off-by: Andrew Thornton <art27@cantab.net>

* avoid race

Signed-off-by: Andrew Thornton <art27@cantab.net>

* change attachment error

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-09-23 23:45:36 +08:00

346 lines
8.9 KiB
Go

// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import (
"fmt"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/log"
)
// AccessMode specifies the users access mode
type AccessMode int
const (
// AccessModeNone no access
AccessModeNone AccessMode = iota // 0
// AccessModeRead read access
AccessModeRead // 1
// AccessModeWrite write access
AccessModeWrite // 2
// AccessModeAdmin admin access
AccessModeAdmin // 3
// AccessModeOwner owner access
AccessModeOwner // 4
)
func (mode AccessMode) String() string {
switch mode {
case AccessModeRead:
return "read"
case AccessModeWrite:
return "write"
case AccessModeAdmin:
return "admin"
case AccessModeOwner:
return "owner"
default:
return "none"
}
}
// ColorFormat provides a ColorFormatted version of this AccessMode
func (mode AccessMode) ColorFormat(s fmt.State) {
log.ColorFprintf(s, "%d:%s",
log.NewColoredIDValue(mode),
mode)
}
// ParseAccessMode returns corresponding access mode to given permission string.
func ParseAccessMode(permission string) AccessMode {
switch permission {
case "write":
return AccessModeWrite
case "admin":
return AccessModeAdmin
default:
return AccessModeRead
}
}
// Access represents the highest access level of a user to the repository. The only access type
// that is not in this table is the real owner of a repository. In case of an organization
// repository, the members of the owners team are in this table.
type Access struct {
ID int64 `xorm:"pk autoincr"`
UserID int64 `xorm:"UNIQUE(s)"`
RepoID int64 `xorm:"UNIQUE(s)"`
Mode AccessMode
}
func init() {
db.RegisterModel(new(Access))
}
func accessLevel(e db.Engine, user *User, repo *Repository) (AccessMode, error) {
mode := AccessModeNone
var userID int64
restricted := false
if user != nil {
userID = user.ID
restricted = user.IsRestricted
}
if !restricted && !repo.IsPrivate {
mode = AccessModeRead
}
if userID == 0 {
return mode, nil
}
if userID == repo.OwnerID {
return AccessModeOwner, nil
}
a := &Access{UserID: userID, RepoID: repo.ID}
if has, err := e.Get(a); !has || err != nil {
return mode, err
}
return a.Mode, nil
}
type repoAccess struct {
Access `xorm:"extends"`
Repository `xorm:"extends"`
}
func (repoAccess) TableName() string {
return "access"
}
// GetRepositoryAccesses finds all repositories with their access mode where a user has access but does not own.
func (user *User) GetRepositoryAccesses() (map[*Repository]AccessMode, error) {
rows, err := db.GetEngine(db.DefaultContext).
Join("INNER", "repository", "repository.id = access.repo_id").
Where("access.user_id = ?", user.ID).
And("repository.owner_id <> ?", user.ID).
Rows(new(repoAccess))
if err != nil {
return nil, err
}
defer rows.Close()
repos := make(map[*Repository]AccessMode, 10)
ownerCache := make(map[int64]*User, 10)
for rows.Next() {
var repo repoAccess
err = rows.Scan(&repo)
if err != nil {
return nil, err
}
var ok bool
if repo.Owner, ok = ownerCache[repo.OwnerID]; !ok {
if err = repo.GetOwner(); err != nil {
return nil, err
}
ownerCache[repo.OwnerID] = repo.Owner
}
repos[&repo.Repository] = repo.Access.Mode
}
return repos, nil
}
// GetAccessibleRepositories finds repositories which the user has access but does not own.
// If limit is smaller than 1 means returns all found results.
func (user *User) GetAccessibleRepositories(limit int) (repos []*Repository, _ error) {
sess := db.GetEngine(db.DefaultContext).
Where("owner_id !=? ", user.ID).
Desc("updated_unix")
if limit > 0 {
sess.Limit(limit)
repos = make([]*Repository, 0, limit)
} else {
repos = make([]*Repository, 0, 10)
}
return repos, sess.
Join("INNER", "access", "access.user_id = ? AND access.repo_id = repository.id", user.ID).
Find(&repos)
}
func maxAccessMode(modes ...AccessMode) AccessMode {
max := AccessModeNone
for _, mode := range modes {
if mode > max {
max = mode
}
}
return max
}
type userAccess struct {
User *User
Mode AccessMode
}
// updateUserAccess updates an access map so that user has at least mode
func updateUserAccess(accessMap map[int64]*userAccess, user *User, mode AccessMode) {
if ua, ok := accessMap[user.ID]; ok {
ua.Mode = maxAccessMode(ua.Mode, mode)
} else {
accessMap[user.ID] = &userAccess{User: user, Mode: mode}
}
}
// FIXME: do cross-comparison so reduce deletions and additions to the minimum?
func (repo *Repository) refreshAccesses(e db.Engine, accessMap map[int64]*userAccess) (err error) {
minMode := AccessModeRead
if !repo.IsPrivate {
minMode = AccessModeWrite
}
newAccesses := make([]Access, 0, len(accessMap))
for userID, ua := range accessMap {
if ua.Mode < minMode && !ua.User.IsRestricted {
continue
}
newAccesses = append(newAccesses, Access{
UserID: userID,
RepoID: repo.ID,
Mode: ua.Mode,
})
}
// Delete old accesses and insert new ones for repository.
if _, err = e.Delete(&Access{RepoID: repo.ID}); err != nil {
return fmt.Errorf("delete old accesses: %v", err)
}
if len(newAccesses) == 0 {
return nil
}
if _, err = e.Insert(newAccesses); err != nil {
return fmt.Errorf("insert new accesses: %v", err)
}
return nil
}
// refreshCollaboratorAccesses retrieves repository collaborations with their access modes.
func (repo *Repository) refreshCollaboratorAccesses(e db.Engine, accessMap map[int64]*userAccess) error {
collaborators, err := repo.getCollaborators(e, ListOptions{})
if err != nil {
return fmt.Errorf("getCollaborations: %v", err)
}
for _, c := range collaborators {
updateUserAccess(accessMap, c.User, c.Collaboration.Mode)
}
return nil
}
// recalculateTeamAccesses recalculates new accesses for teams of an organization
// except the team whose ID is given. It is used to assign a team ID when
// remove repository from that team.
func (repo *Repository) recalculateTeamAccesses(e db.Engine, ignTeamID int64) (err error) {
accessMap := make(map[int64]*userAccess, 20)
if err = repo.getOwner(e); err != nil {
return err
} else if !repo.Owner.IsOrganization() {
return fmt.Errorf("owner is not an organization: %d", repo.OwnerID)
}
if err = repo.refreshCollaboratorAccesses(e, accessMap); err != nil {
return fmt.Errorf("refreshCollaboratorAccesses: %v", err)
}
if err = repo.Owner.loadTeams(e); err != nil {
return err
}
for _, t := range repo.Owner.Teams {
if t.ID == ignTeamID {
continue
}
// Owner team gets owner access, and skip for teams that do not
// have relations with repository.
if t.IsOwnerTeam() {
t.Authorize = AccessModeOwner
} else if !t.hasRepository(e, repo.ID) {
continue
}
if err = t.getMembers(e); err != nil {
return fmt.Errorf("getMembers '%d': %v", t.ID, err)
}
for _, m := range t.Members {
updateUserAccess(accessMap, m, t.Authorize)
}
}
return repo.refreshAccesses(e, accessMap)
}
// recalculateUserAccess recalculates new access for a single user
// Usable if we know access only affected one user
func (repo *Repository) recalculateUserAccess(e db.Engine, uid int64) (err error) {
minMode := AccessModeRead
if !repo.IsPrivate {
minMode = AccessModeWrite
}
accessMode := AccessModeNone
collaborator, err := repo.getCollaboration(e, uid)
if err != nil {
return err
} else if collaborator != nil {
accessMode = collaborator.Mode
}
if err = repo.getOwner(e); err != nil {
return err
} else if repo.Owner.IsOrganization() {
var teams []Team
if err := e.Join("INNER", "team_repo", "team_repo.team_id = team.id").
Join("INNER", "team_user", "team_user.team_id = team.id").
Where("team.org_id = ?", repo.OwnerID).
And("team_repo.repo_id=?", repo.ID).
And("team_user.uid=?", uid).
Find(&teams); err != nil {
return err
}
for _, t := range teams {
if t.IsOwnerTeam() {
t.Authorize = AccessModeOwner
}
accessMode = maxAccessMode(accessMode, t.Authorize)
}
}
// Delete old user accesses and insert new one for repository.
if _, err = e.Delete(&Access{RepoID: repo.ID, UserID: uid}); err != nil {
return fmt.Errorf("delete old user accesses: %v", err)
} else if accessMode >= minMode {
if _, err = e.Insert(&Access{RepoID: repo.ID, UserID: uid, Mode: accessMode}); err != nil {
return fmt.Errorf("insert new user accesses: %v", err)
}
}
return nil
}
func (repo *Repository) recalculateAccesses(e db.Engine) error {
if repo.Owner.IsOrganization() {
return repo.recalculateTeamAccesses(e, 0)
}
accessMap := make(map[int64]*userAccess, 20)
if err := repo.refreshCollaboratorAccesses(e, accessMap); err != nil {
return fmt.Errorf("refreshCollaboratorAccesses: %v", err)
}
return repo.refreshAccesses(e, accessMap)
}
// RecalculateAccesses recalculates all accesses for repository.
func (repo *Repository) RecalculateAccesses() error {
return repo.recalculateAccesses(db.GetEngine(db.DefaultContext))
}