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// Copyright 2014 The Gogs 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"
"github.com/gogits/gogs/modules/log"
)
type AccessMode int
const (
ACCESS_MODE_NONE AccessMode = iota
ACCESS_MODE_READ
ACCESS_MODE_WRITE
ACCESS_MODE_ADMIN
ACCESS_MODE_OWNER
)
// 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 accessLevel(e Engine, u *User, repo *Repository) (AccessMode, error) {
mode := ACCESS_MODE_NONE
if !repo.IsPrivate {
mode = ACCESS_MODE_READ
}
if u != nil {
if u.Id == repo.OwnerID {
return ACCESS_MODE_OWNER, nil
}
a := &Access{UserID: u.Id, RepoID: repo.ID}
if has, err := e.Get(a); !has || err != nil {
return mode, err
}
return a.Mode, nil
}
return mode, nil
}
// AccessLevel returns the Access a user has to a repository. Will return NoneAccess if the
// user does not have access. User can be nil!
func AccessLevel(u *User, repo *Repository) (AccessMode, error) {
return accessLevel(x, u, repo)
}
func hasAccess(e Engine, u *User, repo *Repository, testMode AccessMode) (bool, error) {
mode, err := accessLevel(e, u, repo)
return testMode <= mode, err
}
// HasAccess returns true if someone has the request access level. User can be nil!
func HasAccess(u *User, repo *Repository, testMode AccessMode) (bool, error) {
return hasAccess(x, u, repo, testMode)
}
// GetAccessibleRepositories finds all repositories where a user has access to,
// besides his own.
func (u *User) GetAccessibleRepositories() (map[*Repository]AccessMode, error) {
accesses := make([]*Access, 0, 10)
if err := x.Find(&accesses, &Access{UserID: u.Id}); err != nil {
return nil, err
}
repos := make(map[*Repository]AccessMode, len(accesses))
for _, access := range accesses {
repo, err := GetRepositoryByID(access.RepoID)
if err != nil {
if IsErrRepoNotExist(err) {
log.Error(4, "%v", err)
continue
}
return nil, err
}
if err = repo.GetOwner(); err != nil {
return nil, err
} else if repo.OwnerID == u.Id {
continue
}
repos[repo] = access.Mode
}
// FIXME: should we generate an ordered list here? Random looks weird.
return repos, nil
}
func maxAccessMode(modes ...AccessMode) AccessMode {
max := ACCESS_MODE_NONE
for _, mode := range modes {
if mode > max {
max = mode
}
}
return max
}
// FIXME: do corss-comparison so reduce deletions and additions to the minimum?
func (repo *Repository) refreshAccesses(e Engine, accessMap map[int64]AccessMode) (err error) {
minMode := ACCESS_MODE_READ
if !repo.IsPrivate {
minMode = ACCESS_MODE_WRITE
}
newAccesses := make([]Access, 0, len(accessMap))
for userID, mode := range accessMap {
if mode < minMode {
continue
}
newAccesses = append(newAccesses, Access{
UserID: userID,
RepoID: repo.ID,
Mode: 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)
} else if _, err = e.Insert(newAccesses); err != nil {
return fmt.Errorf("insert new accesses: %v", err)
}
return nil
}
// FIXME: should be able to have read-only access.
// Give all collaborators write access.
func (repo *Repository) refreshCollaboratorAccesses(e Engine, accessMap map[int64]AccessMode) error {
collaborators, err := repo.getCollaborators(e)
if err != nil {
return fmt.Errorf("getCollaborators: %v", err)
}
for _, c := range collaborators {
accessMap[c.Id] = ACCESS_MODE_WRITE
}
// Adds team members access.
if repo.Owner.IsOrganization() {
if err = repo.Owner.GetTeams(); err != nil {
return fmt.Errorf("GetTeams: %v", err)
}
for _, t := range repo.Owner.Teams {
if err = t.GetMembers(); err != nil {
return fmt.Errorf("GetMembers: %v", err)
}
for _, m := range t.Members {
if t.IsOwnerTeam() {
accessMap[m.Id] = ACCESS_MODE_OWNER
} else {
accessMap[m.Id] = maxAccessMode(accessMap[m.Id], t.Authorize)
}
}
}
}
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 Engine, ignTeamID int64) (err error) {
accessMap := make(map[int64]AccessMode, 20)
if err = repo.getOwner(e); err != nil {
return err
}
if err = repo.refreshCollaboratorAccesses(e, accessMap); err != nil {
return fmt.Errorf("refreshCollaboratorAccesses: %v", err)
}
if repo.Owner.IsOrganization() {
if err = repo.Owner.getTeams(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 = ACCESS_MODE_OWNER
} 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 {
accessMap[m.Id] = maxAccessMode(accessMap[m.Id], t.Authorize)
}
}
}
return repo.refreshAccesses(e, accessMap)
}
func (repo *Repository) recalculateAccesses(e Engine) error {
accessMap := make(map[int64]AccessMode, 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 (r *Repository) RecalculateAccesses() error {
return r.recalculateAccesses(x)
}
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