Fix bug preventing transfer to private organization (#12497)

* Fix bug preventing transfer to private organization

The code assessing whether a private organization was visible to a user before
allowing transfer was incorrect due to testing membership the wrong way round

This PR fixes this issue and renames the function performing the test to be
clearer.

Further looking at the API for transfer repository - no testing was
performed to ensure that the acting user could actually see the new
owning organization.

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

* change IsUserPartOfOrg everywhere

models/migrations/v111.go

@@ -148,7 +148,7 @@ func addBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 		if user == nil {
 			hasOrgVisible = repoOwner.Visibility == VisibleTypePublic
 		} else if !user.IsAdmin {
-			isUserPartOfOrg, err := sess.
+			hasMemberWithUserID, err := sess.
 				Where("uid=?", user.ID).
 				And("org_id=?", repoOwner.ID).
 				Table("org_user").
@@ -156,7 +156,7 @@ func addBranchProtectionCanPushAndEnableWhitelist(x *xorm.Engine) error {
 			if err != nil {
 				hasOrgVisible = false
 			}
-			if (repoOwner.Visibility == VisibleTypePrivate || user.IsRestricted) && !isUserPartOfOrg {
+			if (repoOwner.Visibility == VisibleTypePrivate || user.IsRestricted) && !hasMemberWithUserID {
 				hasOrgVisible = false
 			}
 		}

models/org.go

@@ -435,7 +435,7 @@ func hasOrgVisible(e Engine, org *User, user *User) bool {
 		return true
 	}
 
-	if (org.Visibility == structs.VisibleTypePrivate || user.IsRestricted) && !org.isUserPartOfOrg(e, user.ID) {
+	if (org.Visibility == structs.VisibleTypePrivate || user.IsRestricted) && !org.hasMemberWithUserID(e, user.ID) {
 		return false
 	}
 	return true

models/user.go

@@ -610,12 +610,12 @@ func (u *User) IsUserOrgOwner(orgID int64) bool {
 	return isOwner
 }
 
-// IsUserPartOfOrg returns true if user with userID is part of the u organisation.
-func (u *User) IsUserPartOfOrg(userID int64) bool {
-	return u.isUserPartOfOrg(x, userID)
+// HasMemberWithUserID returns true if user with userID is part of the u organisation.
+func (u *User) HasMemberWithUserID(userID int64) bool {
+	return u.hasMemberWithUserID(x, userID)
 }
 
-func (u *User) isUserPartOfOrg(e Engine, userID int64) bool {
+func (u *User) hasMemberWithUserID(e Engine, userID int64) bool {
 	isMember, err := isOrganizationMember(e, u.ID, userID)
 	if err != nil {
 		log.Error("IsOrganizationMember: %v", err)

routers/api/v1/repo/transfer.go

@@ -12,6 +12,7 @@ import (
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/convert"
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/structs"
 	api "code.gitea.io/gitea/modules/structs"
 	repo_service "code.gitea.io/gitea/services/repository"
 )
@@ -53,13 +54,21 @@ func Transfer(ctx *context.APIContext, opts api.TransferRepoOption) {
 	newOwner, err := models.GetUserByName(opts.NewOwner)
 	if err != nil {
 		if models.IsErrUserNotExist(err) {
-			ctx.Error(http.StatusNotFound, "GetUserByName", err)
+			ctx.Error(http.StatusNotFound, "", "The new owner does not exist or cannot be found")
 			return
 		}
 		ctx.InternalServerError(err)
 		return
 	}
 
+	if newOwner.Type == models.UserTypeOrganization {
+		if !ctx.User.IsAdmin && newOwner.Visibility == structs.VisibleTypePrivate && !newOwner.HasMemberWithUserID(ctx.User.ID) {
+			// The user shouldn't know about this organization
+			ctx.Error(http.StatusNotFound, "", "The new owner does not exist or cannot be found")
+			return
+		}
+	}
+
 	var teams []*models.Team
 	if opts.TeamIDs != nil {
 		if !newOwner.IsOrganization() {

routers/repo/setting.go

@@ -418,7 +418,7 @@ func SettingsPost(ctx *context.Context, form auth.RepoSettingForm) {
 		}
 
 		if newOwner.Type == models.UserTypeOrganization {
-			if !ctx.User.IsAdmin && newOwner.Visibility == structs.VisibleTypePrivate && !ctx.User.IsUserPartOfOrg(newOwner.ID) {
+			if !ctx.User.IsAdmin && newOwner.Visibility == structs.VisibleTypePrivate && !newOwner.HasMemberWithUserID(ctx.User.ID) {
 				// The user shouldn't know about this organization
 				ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_owner_name"), tplSettingsOptions, nil)
 				return

templates/user/profile.tmpl

@@ -52,7 +52,7 @@
 							<li>
 								<ul class="user-orgs">
 								{{range .Orgs}}
-									{{if (or .Visibility.IsPublic (and ($.SignedUser) (or .Visibility.IsLimited (and (.IsUserPartOfOrg $.SignedUserID) .Visibility.IsPrivate) ($.IsAdmin))))}}
+									{{if (or .Visibility.IsPublic (and ($.SignedUser) (or .Visibility.IsLimited (and (.HasMemberWithUserID $.SignedUserID) .Visibility.IsPrivate) ($.IsAdmin))))}}
 									<li>
 										<a href="{{.HomeLink}}"><img class="ui image poping up" src="{{.RelAvatarLink}}" data-content="{{.Name}}" data-position="top center" data-variation="tiny inverted"></a>
 									</li>