fix: use consistent GetUser family functions

models/user/user.go

@@ -1051,13 +1051,13 @@ func GetPossibleUserByIDs(ctx context.Context, ids []int64) ([]*User, error) {
 	return users, nil
 }
 
-// GetUserByName returns user by given name.
-func GetUserByName(ctx context.Context, name string) (*User, error) {
-	if len(name) == 0 {
-		return nil, ErrUserNotExist{Name: name}
+func getUserByNameWithTypes(ctx context.Context, name string, types ...UserType) (*User, error) {
+	u := &User{}
+	sess := db.GetEngine(ctx).Where(builder.Eq{"lower_name": strings.ToLower(name)})
+	if len(types) > 0 {
+		sess.In("`type`", types)
 	}
-	u := &User{LowerName: strings.ToLower(name), Type: UserTypeIndividual}
-	has, err := db.GetEngine(ctx).Get(u)
+	has, err := sess.Get(u)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -1066,6 +1066,15 @@ func GetUserByName(ctx context.Context, name string) (*User, error) {
 	return u, nil
 }
 
+// GetUserByName returns the user object by given name, any user type.
+func GetUserByName(ctx context.Context, name string) (*User, error) {
+	return getUserByNameWithTypes(ctx, name)
+}
+
+func GetIndividualUserByName(ctx context.Context, name string) (*User, error) {
+	return getUserByNameWithTypes(ctx, name, UserTypeIndividual)
+}
+
 // GetUserEmailsByNames returns a list of e-mails corresponds to names of users
 // that have their email notifications set to enabled or onmention.
 func GetUserEmailsByNames(ctx context.Context, names []string) []string {
@@ -1108,19 +1117,6 @@ func GetMailableUsersByIDs(ctx context.Context, ids []int64, isMention bool) ([]
 		Find(&ous)
 }
 
-// GetUserNameByID returns username for the id
-func GetUserNameByID(ctx context.Context, id int64) (string, error) {
-	var name string
-	has, err := db.GetEngine(ctx).Table("user").Where("id = ?", id).Cols("name").Get(&name)
-	if err != nil {
-		return "", err
-	}
-	if has {
-		return name, nil
-	}
-	return "", nil
-}
-
 // GetUserIDsByNames returns a slice of ids corresponds to names.
 func GetUserIDsByNames(ctx context.Context, names []string, ignoreNonExistent bool) ([]int64, error) {
 	ids := make([]int64, 0, len(names))
@@ -1321,13 +1317,14 @@ func GetUserByEmail(ctx context.Context, email string) (*User, error) {
 		if id != 0 {
 			return GetUserByID(ctx, id)
 		}
-		return GetUserByName(ctx, name)
+		return GetIndividualUserByName(ctx, name)
 	}
 
 	return nil, ErrUserNotExist{Name: email}
 }
 
 func GetIndividualUser(ctx context.Context, user *User) (bool, error) {
+	// FIXME: the design is wrong, empty User fields won't apply, this function should be removed in the future
 	has, err := db.GetEngine(ctx).Get(user)
 	if has && user.Type != UserTypeIndividual {
 		has = false
@@ -1492,27 +1489,3 @@ func DisabledFeaturesWithLoginType(user *User) *container.Set[string] {
 	}
 	return &setting.Admin.UserDisabledFeatures
 }
-
-// GetUserOrOrgIDByName returns the id for a user or an org by name
-func GetUserOrOrgIDByName(ctx context.Context, name string) (int64, error) {
-	var id int64
-	has, err := db.GetEngine(ctx).Table("user").Where("name = ?", name).Cols("id").Get(&id)
-	if err != nil {
-		return 0, err
-	} else if !has {
-		return 0, fmt.Errorf("user or org with name %s: %w", name, util.ErrNotExist)
-	}
-	return id, nil
-}
-
-// GetUserOrOrgByName returns the user or org by name
-func GetUserOrOrgByName(ctx context.Context, name string) (*User, error) {
-	var u User
-	has, err := db.GetEngine(ctx).Where("lower_name = ?", strings.ToLower(name)).Get(&u)
-	if err != nil {
-		return nil, err
-	} else if !has {
-		return nil, ErrUserNotExist{Name: name}
-	}
-	return &u, nil
-}

routers/common/compare.go

@@ -129,7 +129,7 @@ func GetHeadOwnerAndRepo(ctx context.Context, baseRepo *repo_model.Repository, c
 	if compareReq.HeadOwner == baseRepo.Owner.Name {
 		headOwner = baseRepo.Owner
 	} else {
-		headOwner, err = user_model.GetUserOrOrgByName(ctx, compareReq.HeadOwner)
+		headOwner, err = user_model.GetUserByName(ctx, compareReq.HeadOwner)
 		if err != nil {
 			return nil, nil, err
 		}

routers/web/repo/setting/actions.go

@@ -6,7 +6,6 @@ package setting
 import (
 	"errors"
 	"net/http"
-	"strings"
 
 	"code.gitea.io/gitea/models/actions"
 	repo_model "code.gitea.io/gitea/models/repo"
@@ -94,15 +93,12 @@ func ActionsUnitPost(ctx *context.Context) {
 }
 
 func AddCollaborativeOwner(ctx *context.Context) {
-	name := strings.ToLower(ctx.FormString("collaborative_owner"))
-
-	ownerID, err := user_model.GetUserOrOrgIDByName(ctx, name)
+	collUser, err := user_model.GetUserByName(ctx, ctx.FormString("collaborative_owner"))
 	if err != nil {
 		if errors.Is(err, util.ErrNotExist) {
-			ctx.Flash.Error(ctx.Tr("form.user_not_exist"))
-			ctx.JSONErrorNotFound()
+			ctx.JSONError(ctx.Tr("form.user_not_exist"))
 		} else {
-			ctx.ServerError("GetUserOrOrgIDByName", err)
+			ctx.ServerError("GetUserByName", err)
 		}
 		return
 	}
@@ -113,7 +109,7 @@ func AddCollaborativeOwner(ctx *context.Context) {
 		return
 	}
 	actionsCfg := actionsUnit.ActionsConfig()
-	actionsCfg.AddCollaborativeOwner(ownerID)
+	actionsCfg.AddCollaborativeOwner(collUser.ID)
 	if err := repo_model.UpdateRepoUnitConfig(ctx, actionsUnit); err != nil {
 		ctx.ServerError("UpdateRepoUnitConfig", err)
 		return

services/migrations/gitea_uploader.go

@@ -6,6 +6,7 @@ package migrations
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"strconv"
@@ -989,12 +990,15 @@ func (g *GiteaLocalUploader) remapUser(ctx context.Context, source user_model.Ex
 func (g *GiteaLocalUploader) remapLocalUser(ctx context.Context, source user_model.ExternalUserMigrated) (int64, error) {
 	userid, ok := g.userMap[source.GetExternalID()]
 	if !ok {
-		name, err := user_model.GetUserNameByID(ctx, source.GetExternalID())
-		if err != nil {
+		user, err := user_model.GetUserByID(ctx, source.GetExternalID())
+		if errors.Is(err, util.ErrNotExist) {
+			g.userMap[source.GetExternalID()] = userid
+			return 0, nil
+		} else if err != nil {
 			return 0, err
 		}
-		// let's not reuse an ID when the user was deleted or has a different user name
-		if name != source.GetExternalName() {
+		// let's not reuse an ID when the user was deleted or has a different username
+		if !util.AsciiEqualFold(user.Name, source.GetExternalName()) {
 			userid = 0
 		} else {
 			userid = source.GetExternalID()