Fix team permissions (go-gitea#34827)

* Fix go-gitea#34793
* Fix go-gitea#33456

Author: wxiaoguang

models/git/protected_branch.go

@@ -518,7 +518,7 @@ func updateTeamWhitelist(ctx context.Context, repo *repo_model.Repository, curre
 		return currentWhitelist, nil
 	}
 
-	teams, err := organization.GetTeamsWithAccessToRepo(ctx, repo.OwnerID, repo.ID, perm.AccessModeRead)
+	teams, err := organization.GetTeamsWithAccessToAnyRepoUnit(ctx, repo.OwnerID, repo.ID, perm.AccessModeRead, unit.TypeCode, unit.TypePullRequests)
 	if err != nil {
 		return nil, fmt.Errorf("GetTeamsWithAccessToRepo [org_id: %d, repo_id: %d]: %v", repo.OwnerID, repo.ID, err)
 	}

models/organization/org.go

@@ -602,8 +602,3 @@ func getUserTeamIDsQueryBuilder(orgID, userID int64) *builder.Builder {
 			"team_user.uid":    userID,
 		})
 }
-
-// TeamsWithAccessToRepo returns all teams that have given access level to the repository.
-func (org *Organization) TeamsWithAccessToRepo(ctx context.Context, repoID int64, mode perm.AccessMode) ([]*Team, error) {
-	return GetTeamsWithAccessToRepo(ctx, org.ID, repoID, mode)
-}

models/organization/team_repo.go

@@ -9,6 +9,8 @@ import (
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/perm"
 	"code.gitea.io/gitea/models/unit"
+
+	"xorm.io/builder"
 )
 
 // TeamRepo represents an team-repository relation.
@@ -48,26 +50,27 @@ func RemoveTeamRepo(ctx context.Context, teamID, repoID int64) error {
 	return err
 }
 
-// GetTeamsWithAccessToRepo returns all teams in an organization that have given access level to the repository.
-func GetTeamsWithAccessToRepo(ctx context.Context, orgID, repoID int64, mode perm.AccessMode) ([]*Team, error) {
+// GetTeamsWithAccessToAnyRepoUnit returns all teams in an organization that have given access level to the repository special unit.
+// This function is only used for finding some teams that can be used as branch protection allowlist or reviewers, it isn't really used for access control.
+// FIXME: TEAM-UNIT-PERMISSION this logic is not complete, search the fixme keyword to see more details
+func GetTeamsWithAccessToAnyRepoUnit(ctx context.Context, orgID, repoID int64, mode perm.AccessMode, unitType unit.Type, unitTypesMore ...unit.Type) ([]*Team, error) {
 	teams := make([]*Team, 0, 5)
-	return teams, db.GetEngine(ctx).Where("team.authorize >= ?", mode).
-		Join("INNER", "team_repo", "team_repo.team_id = team.id").
-		And("team_repo.org_id = ?", orgID).
-		And("team_repo.repo_id = ?", repoID).
-		OrderBy("name").
-		Find(&teams)
-}
 
-// GetTeamsWithAccessToRepoUnit returns all teams in an organization that have given access level to the repository special unit.
-func GetTeamsWithAccessToRepoUnit(ctx context.Context, orgID, repoID int64, mode perm.AccessMode, unitType unit.Type) ([]*Team, error) {
-	teams := make([]*Team, 0, 5)
-	return teams, db.GetEngine(ctx).Where("team_unit.access_mode >= ?", mode).
+	sub := builder.Select("team_id").From("team_unit").
+		Where(builder.Expr("team_unit.team_id = team.id")).
+		And(builder.In("team_unit.type", append([]unit.Type{unitType}, unitTypesMore...))).
+		And(builder.Expr("team_unit.access_mode >= ?", mode))
+
+	err := db.GetEngine(ctx).
 		Join("INNER", "team_repo", "team_repo.team_id = team.id").
-		Join("INNER", "team_unit", "team_unit.team_id = team.id").
 		And("team_repo.org_id = ?", orgID).
 		And("team_repo.repo_id = ?", repoID).
-		And("team_unit.type = ?", unitType).
+		And(builder.Or(
+			builder.Expr("team.authorize >= ?", mode),
+			builder.In("team.id", sub),
+		)).
 		OrderBy("name").
 		Find(&teams)
+
+	return teams, err
 }

models/organization/team_repo_test.go

@@ -22,7 +22,7 @@ func TestGetTeamsWithAccessToRepoUnit(t *testing.T) {
 	org41 := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 41})
 	repo61 := unittest.AssertExistsAndLoadBean(t, &repo.Repository{ID: 61})
 
-	teams, err := organization.GetTeamsWithAccessToRepoUnit(db.DefaultContext, org41.ID, repo61.ID, perm.AccessModeRead, unit.TypePullRequests)
+	teams, err := organization.GetTeamsWithAccessToAnyRepoUnit(db.DefaultContext, org41.ID, repo61.ID, perm.AccessModeRead, unit.TypePullRequests)
 	assert.NoError(t, err)
 	if assert.Len(t, teams, 2) {
 		assert.EqualValues(t, 21, teams[0].ID)

models/perm/access/repo_permission.go

@@ -267,7 +267,6 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 	perm.units = repo.Units
 
 	// 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
@@ -286,7 +285,8 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 	}
 
 	// 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
+	// Allow user if they are a collaborator of a repo within a private user or a private organization but not a member of the organization itself
+	// TODO: rename it to "IsOwnerVisibleToDoer"
 	if !organization.HasOrgOrUserVisible(ctx, repo.Owner, user) && !isCollaborator {
 		perm.AccessMode = perm_model.AccessModeNone
 		return perm, nil
@@ -304,7 +304,7 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 		return perm, nil
 	}
 
-	// plain user
+	// plain user TODO: this check should be replaced, only need to check collaborator access mode
 	perm.AccessMode, err = accessLevel(ctx, user, repo)
 	if err != nil {
 		return perm, err
@@ -314,6 +314,19 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 		return perm, nil
 	}
 
+	// now: the owner is visible to doer, if the repo is public, then the min access mode is read
+	minAccessMode := util.Iif(!repo.IsPrivate && !user.IsRestricted, perm_model.AccessModeRead, perm_model.AccessModeNone)
+	perm.AccessMode = max(perm.AccessMode, minAccessMode)
+
+	// get units mode from teams
+	teams, err := organization.GetUserRepoTeams(ctx, repo.OwnerID, user.ID, repo.ID)
+	if err != nil {
+		return perm, err
+	}
+	if len(teams) == 0 {
+		return perm, nil
+	}
+
 	perm.unitsMode = make(map[unit.Type]perm_model.AccessMode)
 
 	// Collaborators on organization
@@ -323,12 +336,6 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 		}
 	}
 
-	// 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.HasAdminAccess() {
@@ -339,19 +346,12 @@ func GetUserRepoPermission(ctx context.Context, repo *repo_model.Repository, use
 	}
 
 	for _, u := range repo.Units {
-		var found bool
 		for _, team := range teams {
+			unitAccessMode := minAccessMode
 			if teamMode, exist := team.UnitAccessModeEx(ctx, u.Type); exist {
-				perm.unitsMode[u.Type] = max(perm.unitsMode[u.Type], teamMode)
-				found = true
-			}
-		}
-
-		// for a public repo on an organization, a non-restricted user has read permission on non-team defined units.
-		if !found && !repo.IsPrivate && !user.IsRestricted {
-			if _, ok := perm.unitsMode[u.Type]; !ok {
-				perm.unitsMode[u.Type] = perm_model.AccessModeRead
+				unitAccessMode = max(perm.unitsMode[u.Type], unitAccessMode, teamMode)
 			}
+			perm.unitsMode[u.Type] = unitAccessMode
 		}
 	}
 

models/perm/access/repo_permission_test.go

@@ -6,12 +6,16 @@ package access
 import (
 	"testing"
 
+	"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"
+	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestHasAnyUnitAccess(t *testing.T) {
@@ -152,3 +156,45 @@ func TestUnitAccessMode(t *testing.T) {
 	}
 	assert.Equal(t, perm_model.AccessModeRead, perm.UnitAccessMode(unit.TypeWiki), "has unit, and map, use map")
 }
+
+func TestGetUserRepoPermission(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	ctx := t.Context()
+	repo32 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 32}) // org public repo
+	require.NoError(t, repo32.LoadOwner(ctx))
+	require.True(t, repo32.Owner.IsOrganization())
+
+	require.NoError(t, db.TruncateBeans(ctx, &organization.Team{}, &organization.TeamUser{}, &organization.TeamRepo{}, &organization.TeamUnit{}))
+	org := repo32.Owner
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	team := &organization.Team{OrgID: org.ID, LowerName: "test_team"}
+	require.NoError(t, db.Insert(ctx, team))
+
+	t.Run("DoerInTeamWithNoRepo", func(t *testing.T) {
+		require.NoError(t, db.Insert(ctx, &organization.TeamUser{OrgID: org.ID, TeamID: team.ID, UID: user.ID}))
+		perm, err := GetUserRepoPermission(ctx, repo32, user)
+		require.NoError(t, err)
+		assert.Equal(t, perm_model.AccessModeRead, perm.AccessMode)
+		assert.Nil(t, perm.unitsMode) // doer in the team, but has no access to the repo
+	})
+
+	require.NoError(t, db.Insert(ctx, &organization.TeamRepo{OrgID: org.ID, TeamID: team.ID, RepoID: repo32.ID}))
+	require.NoError(t, db.Insert(ctx, &organization.TeamUnit{OrgID: org.ID, TeamID: team.ID, Type: unit.TypeCode, AccessMode: perm_model.AccessModeNone}))
+	t.Run("DoerWithTeamUnitAccessNone", func(t *testing.T) {
+		perm, err := GetUserRepoPermission(ctx, repo32, user)
+		require.NoError(t, err)
+		assert.Equal(t, perm_model.AccessModeRead, perm.AccessMode)
+		assert.Equal(t, perm_model.AccessModeRead, perm.unitsMode[unit.TypeCode])
+		assert.Equal(t, perm_model.AccessModeRead, perm.unitsMode[unit.TypeIssues])
+	})
+
+	require.NoError(t, db.TruncateBeans(ctx, &organization.TeamUnit{}))
+	require.NoError(t, db.Insert(ctx, &organization.TeamUnit{OrgID: org.ID, TeamID: team.ID, Type: unit.TypeCode, AccessMode: perm_model.AccessModeWrite}))
+	t.Run("DoerWithTeamUnitAccessWrite", func(t *testing.T) {
+		perm, err := GetUserRepoPermission(ctx, repo32, user)
+		require.NoError(t, err)
+		assert.Equal(t, perm_model.AccessModeRead, perm.AccessMode)
+		assert.Equal(t, perm_model.AccessModeWrite, perm.unitsMode[unit.TypeCode])
+		assert.Equal(t, perm_model.AccessModeRead, perm.unitsMode[unit.TypeIssues])
+	})
+}

options/locale/locale_en-US.ini

@@ -2153,6 +2153,7 @@ settings.collaboration.write = Write
 settings.collaboration.read = Read
 settings.collaboration.owner = Owner
 settings.collaboration.undefined = Undefined
+settings.collaboration.per_unit = Unit Permissions
 settings.hooks = Webhooks
 settings.githooks = Git Hooks
 settings.basic_settings = Basic Settings

routers/web/org/teams.go

@@ -283,11 +283,22 @@ func NewTeam(ctx *context.Context) {
 }
 
 // FIXME: TEAM-UNIT-PERMISSION: this design is not right, when a new unit is added in the future,
-// admin team won't inherit the correct admin permission for the new unit.
+// The existing teams won't inherit the correct admin permission for the new unit.
+// The full history is like this:
+// 1. There was only "team", no "team unit", so "team.authorize" was used to determine the team permission.
+// 2. Later, "team unit" was introduced, then the usage of "team.authorize" became inconsistent, and causes various bugs.
+//   - Sometimes, "team.authorize" is used to determine the team permission, e.g. admin, owner
+//   - Sometimes, "team unit" is used not really used and "team unit" is used.
+//   - Some functions like `GetTeamsWithAccessToAnyRepoUnit` use both.
+//
+// 3. After introducing "team unit" and more unclear changes, it becomes difficult to maintain team permissions.
+//   - Org owner need to click the permission for each unit, but can't just set a common "write" permission for all units.
+//
+// Ideally, "team.authorize=write" should mean the team has write access to all units including newly (future) added ones.
 func getUnitPerms(forms url.Values, teamPermission perm.AccessMode) map[unit_model.Type]perm.AccessMode {
 	unitPerms := make(map[unit_model.Type]perm.AccessMode)
 	for _, ut := range unit_model.AllRepoUnitTypes {
-		// Default accessmode is none
+		// Default access mode is none
 		unitPerms[ut] = perm.AccessModeNone
 
 		v, ok := forms[fmt.Sprintf("unit_%d", ut)]

routers/web/repo/setting/protected_branch.go

@@ -17,6 +17,7 @@ import (
 	"code.gitea.io/gitea/models/perm"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/templates"
 	"code.gitea.io/gitea/modules/web"
@@ -89,7 +90,7 @@ func SettingsProtectedBranch(c *context.Context) {
 	c.Data["recent_status_checks"] = contexts
 
 	if c.Repo.Owner.IsOrganization() {
-		teams, err := organization.OrgFromUser(c.Repo.Owner).TeamsWithAccessToRepo(c, c.Repo.Repository.ID, perm.AccessModeRead)
+		teams, err := organization.GetTeamsWithAccessToAnyRepoUnit(c, c.Repo.Owner.ID, c.Repo.Repository.ID, perm.AccessModeRead, unit.TypeCode, unit.TypePullRequests)
 		if err != nil {
 			c.ServerError("Repo.Owner.TeamsWithAccessToRepo", err)
 			return

routers/web/repo/setting/protected_tag.go

@@ -12,6 +12,7 @@ import (
 	"code.gitea.io/gitea/models/organization"
 	"code.gitea.io/gitea/models/perm"
 	access_model "code.gitea.io/gitea/models/perm/access"
+	"code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/templates"
@@ -156,7 +157,7 @@ func setTagsContext(ctx *context.Context) error {
 	ctx.Data["Users"] = users
 
 	if ctx.Repo.Owner.IsOrganization() {
-		teams, err := organization.OrgFromUser(ctx.Repo.Owner).TeamsWithAccessToRepo(ctx, ctx.Repo.Repository.ID, perm.AccessModeRead)
+		teams, err := organization.GetTeamsWithAccessToAnyRepoUnit(ctx, ctx.Repo.Owner.ID, ctx.Repo.Repository.ID, perm.AccessModeRead, unit.TypeCode, unit.TypePullRequests)
 		if err != nil {
 			ctx.ServerError("Repo.Owner.TeamsWithAccessToRepo", err)
 			return err