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3feba9f1f4
Replace #6312 Help #5833 Wiki solution for #639
249 lines
6.9 KiB
Go
249 lines
6.9 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package access
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import (
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"context"
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"fmt"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/models/organization"
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"code.gitea.io/gitea/models/perm"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"xorm.io/builder"
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)
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// Access represents the highest access level of a user to the repository. The only access type
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// that is not in this table is the real owner of a repository. In case of an organization
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// repository, the members of the owners team are in this table.
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type Access struct {
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ID int64 `xorm:"pk autoincr"`
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UserID int64 `xorm:"UNIQUE(s)"`
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RepoID int64 `xorm:"UNIQUE(s)"`
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Mode perm.AccessMode
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}
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func init() {
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db.RegisterModel(new(Access))
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}
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func accessLevel(ctx context.Context, user *user_model.User, repo *repo_model.Repository) (perm.AccessMode, error) {
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mode := perm.AccessModeNone
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var userID int64
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restricted := false
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if user != nil {
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userID = user.ID
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restricted = user.IsRestricted
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}
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if !restricted && !repo.IsPrivate {
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mode = perm.AccessModeRead
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}
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if userID == 0 {
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return mode, nil
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}
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if userID == repo.OwnerID {
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return perm.AccessModeOwner, nil
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}
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a, exist, err := db.Get[Access](ctx, builder.Eq{"user_id": userID, "repo_id": repo.ID})
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if err != nil {
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return mode, err
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} else if !exist {
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return mode, nil
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}
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return a.Mode, nil
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}
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func maxAccessMode(modes ...perm.AccessMode) perm.AccessMode {
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maxMode := perm.AccessModeNone
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for _, mode := range modes {
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maxMode = max(maxMode, mode)
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}
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return maxMode
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}
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type userAccess struct {
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User *user_model.User
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Mode perm.AccessMode
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}
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// updateUserAccess updates an access map so that user has at least mode
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func updateUserAccess(accessMap map[int64]*userAccess, user *user_model.User, mode perm.AccessMode) {
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if ua, ok := accessMap[user.ID]; ok {
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ua.Mode = maxAccessMode(ua.Mode, mode)
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} else {
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accessMap[user.ID] = &userAccess{User: user, Mode: mode}
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}
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}
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// FIXME: do cross-comparison so reduce deletions and additions to the minimum?
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func refreshAccesses(ctx context.Context, repo *repo_model.Repository, accessMap map[int64]*userAccess) (err error) {
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minMode := perm.AccessModeRead
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if err := repo.LoadOwner(ctx); err != nil {
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return fmt.Errorf("LoadOwner: %w", err)
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}
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// If the repo isn't private and isn't owned by a organization,
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// increase the minMode to Write.
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if !repo.IsPrivate && !repo.Owner.IsOrganization() {
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minMode = perm.AccessModeWrite
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}
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newAccesses := make([]Access, 0, len(accessMap))
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for userID, ua := range accessMap {
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if ua.Mode < minMode && !ua.User.IsRestricted {
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continue
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}
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newAccesses = append(newAccesses, Access{
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UserID: userID,
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RepoID: repo.ID,
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Mode: ua.Mode,
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})
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}
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// Delete old accesses and insert new ones for repository.
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if _, err = db.DeleteByBean(ctx, &Access{RepoID: repo.ID}); err != nil {
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return fmt.Errorf("delete old accesses: %w", err)
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}
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if len(newAccesses) == 0 {
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return nil
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}
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if err = db.Insert(ctx, newAccesses); err != nil {
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return fmt.Errorf("insert new accesses: %w", err)
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}
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return nil
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}
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// refreshCollaboratorAccesses retrieves repository collaborations with their access modes.
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func refreshCollaboratorAccesses(ctx context.Context, repoID int64, accessMap map[int64]*userAccess) error {
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collaborators, _, err := repo_model.GetCollaborators(ctx, &repo_model.FindCollaborationOptions{RepoID: repoID})
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if err != nil {
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return fmt.Errorf("GetCollaborators: %w", err)
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}
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for _, c := range collaborators {
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if c.User.IsGhost() {
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continue
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}
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updateUserAccess(accessMap, c.User, c.Collaboration.Mode)
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}
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return nil
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}
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// RecalculateTeamAccesses recalculates new accesses for teams of an organization
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// except the team whose ID is given. It is used to assign a team ID when
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// remove repository from that team.
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func RecalculateTeamAccesses(ctx context.Context, repo *repo_model.Repository, ignTeamID int64) (err error) {
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accessMap := make(map[int64]*userAccess, 20)
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if err = repo.LoadOwner(ctx); err != nil {
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return err
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} else if !repo.Owner.IsOrganization() {
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return fmt.Errorf("owner is not an organization: %d", repo.OwnerID)
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}
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if err = refreshCollaboratorAccesses(ctx, repo.ID, accessMap); err != nil {
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return fmt.Errorf("refreshCollaboratorAccesses: %w", err)
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}
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teams, err := organization.FindOrgTeams(ctx, repo.Owner.ID)
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if err != nil {
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return err
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}
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for _, t := range teams {
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if t.ID == ignTeamID {
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continue
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}
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// Owner team gets owner access, and skip for teams that do not
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// have relations with repository.
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if t.IsOwnerTeam() {
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t.AccessMode = perm.AccessModeOwner
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} else if !organization.HasTeamRepo(ctx, t.OrgID, t.ID, repo.ID) {
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continue
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}
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if err = t.LoadMembers(ctx); err != nil {
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return fmt.Errorf("getMembers '%d': %w", t.ID, err)
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}
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for _, m := range t.Members {
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updateUserAccess(accessMap, m, t.AccessMode)
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}
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}
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return refreshAccesses(ctx, repo, accessMap)
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}
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// RecalculateUserAccess recalculates new access for a single user
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// Usable if we know access only affected one user
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func RecalculateUserAccess(ctx context.Context, repo *repo_model.Repository, uid int64) (err error) {
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minMode := perm.AccessModeRead
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if !repo.IsPrivate {
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minMode = perm.AccessModeWrite
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}
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accessMode := perm.AccessModeNone
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e := db.GetEngine(ctx)
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collaborator, err := repo_model.GetCollaboration(ctx, repo.ID, uid)
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if err != nil {
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return err
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} else if collaborator != nil {
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accessMode = collaborator.Mode
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}
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if err = repo.LoadOwner(ctx); err != nil {
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return err
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} else if repo.Owner.IsOrganization() {
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var teams []organization.Team
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if err := e.Join("INNER", "team_repo", "team_repo.team_id = team.id").
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Join("INNER", "team_user", "team_user.team_id = team.id").
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Where("team.org_id = ?", repo.OwnerID).
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And("team_repo.repo_id=?", repo.ID).
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And("team_user.uid=?", uid).
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Find(&teams); err != nil {
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return err
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}
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for _, t := range teams {
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if t.IsOwnerTeam() {
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t.AccessMode = perm.AccessModeOwner
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}
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accessMode = maxAccessMode(accessMode, t.AccessMode)
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}
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}
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// Delete old user accesses and insert new one for repository.
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if _, err = e.Delete(&Access{RepoID: repo.ID, UserID: uid}); err != nil {
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return fmt.Errorf("delete old user accesses: %w", err)
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} else if accessMode >= minMode {
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if err = db.Insert(ctx, &Access{RepoID: repo.ID, UserID: uid, Mode: accessMode}); err != nil {
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return fmt.Errorf("insert new user accesses: %w", err)
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}
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}
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return nil
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}
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// RecalculateAccesses recalculates all accesses for repository.
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func RecalculateAccesses(ctx context.Context, repo *repo_model.Repository) error {
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if repo.Owner.IsOrganization() {
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return RecalculateTeamAccesses(ctx, repo, 0)
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}
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accessMap := make(map[int64]*userAccess, 20)
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if err := refreshCollaboratorAccesses(ctx, repo.ID, accessMap); err != nil {
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return fmt.Errorf("refreshCollaboratorAccesses: %w", err)
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}
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return refreshAccesses(ctx, repo, accessMap)
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}
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