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forgejo/models/git/lfs.go
Lunny Xiao dd30d9d5c0
Remove GetByBean method because sometimes it's danger when query condition parameter is zero and also introduce new generic methods (#28220)
The function `GetByBean` has an obvious defect that when the fields are
empty values, it will be ignored. Then users will get a wrong result
which is possibly used to make a security problem.

To avoid the possibility, this PR removed function `GetByBean` and all
references.
And some new generic functions have been introduced to be used.

The recommand usage like below.

```go
// if query an object according id
obj, err := db.GetByID[Object](ctx, id)
// query with other conditions
obj, err := db.Get[Object](ctx, builder.Eq{"a": a, "b":b})
```
2023-12-07 15:27:36 +08:00

436 lines
13 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"context"
"fmt"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/perm"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unit"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
"xorm.io/builder"
)
// ErrLFSLockNotExist represents a "LFSLockNotExist" kind of error.
type ErrLFSLockNotExist struct {
ID int64
RepoID int64
Path string
}
// IsErrLFSLockNotExist checks if an error is a ErrLFSLockNotExist.
func IsErrLFSLockNotExist(err error) bool {
_, ok := err.(ErrLFSLockNotExist)
return ok
}
func (err ErrLFSLockNotExist) Error() string {
return fmt.Sprintf("lfs lock does not exist [id: %d, rid: %d, path: %s]", err.ID, err.RepoID, err.Path)
}
func (err ErrLFSLockNotExist) Unwrap() error {
return util.ErrNotExist
}
// ErrLFSUnauthorizedAction represents a "LFSUnauthorizedAction" kind of error.
type ErrLFSUnauthorizedAction struct {
RepoID int64
UserName string
Mode perm.AccessMode
}
// IsErrLFSUnauthorizedAction checks if an error is a ErrLFSUnauthorizedAction.
func IsErrLFSUnauthorizedAction(err error) bool {
_, ok := err.(ErrLFSUnauthorizedAction)
return ok
}
func (err ErrLFSUnauthorizedAction) Error() string {
if err.Mode == perm.AccessModeWrite {
return fmt.Sprintf("User %s doesn't have write access for lfs lock [rid: %d]", err.UserName, err.RepoID)
}
return fmt.Sprintf("User %s doesn't have read access for lfs lock [rid: %d]", err.UserName, err.RepoID)
}
func (err ErrLFSUnauthorizedAction) Unwrap() error {
return util.ErrPermissionDenied
}
// ErrLFSLockAlreadyExist represents a "LFSLockAlreadyExist" kind of error.
type ErrLFSLockAlreadyExist struct {
RepoID int64
Path string
}
// IsErrLFSLockAlreadyExist checks if an error is a ErrLFSLockAlreadyExist.
func IsErrLFSLockAlreadyExist(err error) bool {
_, ok := err.(ErrLFSLockAlreadyExist)
return ok
}
func (err ErrLFSLockAlreadyExist) Error() string {
return fmt.Sprintf("lfs lock already exists [rid: %d, path: %s]", err.RepoID, err.Path)
}
func (err ErrLFSLockAlreadyExist) Unwrap() error {
return util.ErrAlreadyExist
}
// ErrLFSFileLocked represents a "LFSFileLocked" kind of error.
type ErrLFSFileLocked struct {
RepoID int64
Path string
UserName string
}
// IsErrLFSFileLocked checks if an error is a ErrLFSFileLocked.
func IsErrLFSFileLocked(err error) bool {
_, ok := err.(ErrLFSFileLocked)
return ok
}
func (err ErrLFSFileLocked) Error() string {
return fmt.Sprintf("File is lfs locked [repo: %d, locked by: %s, path: %s]", err.RepoID, err.UserName, err.Path)
}
func (err ErrLFSFileLocked) Unwrap() error {
return util.ErrPermissionDenied
}
// LFSMetaObject stores metadata for LFS tracked files.
type LFSMetaObject struct {
ID int64 `xorm:"pk autoincr"`
lfs.Pointer `xorm:"extends"`
RepositoryID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
Existing bool `xorm:"-"`
CreatedUnix timeutil.TimeStamp `xorm:"created"`
UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
}
func init() {
db.RegisterModel(new(LFSMetaObject))
}
// LFSTokenResponse defines the JSON structure in which the JWT token is stored.
// This structure is fetched via SSH and passed by the Git LFS client to the server
// endpoint for authorization.
type LFSTokenResponse struct {
Header map[string]string `json:"header"`
Href string `json:"href"`
}
// ErrLFSObjectNotExist is returned from lfs models functions in order
// to differentiate between database and missing object errors.
var ErrLFSObjectNotExist = db.ErrNotExist{Resource: "LFS Meta object"}
// NewLFSMetaObject stores a given populated LFSMetaObject structure in the database
// if it is not already present.
func NewLFSMetaObject(ctx context.Context, repoID int64, p lfs.Pointer) (*LFSMetaObject, error) {
var err error
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return nil, err
}
defer committer.Close()
m, exist, err := db.Get[LFSMetaObject](ctx, builder.Eq{"repository_id": repoID, "oid": p.Oid})
if err != nil {
return nil, err
} else if exist {
m.Existing = true
return m, committer.Commit()
}
m = &LFSMetaObject{Pointer: p, RepositoryID: repoID}
if err = db.Insert(ctx, m); err != nil {
return nil, err
}
return m, committer.Commit()
}
// GetLFSMetaObjectByOid selects a LFSMetaObject entry from database by its OID.
// It may return ErrLFSObjectNotExist or a database error. If the error is nil,
// the returned pointer is a valid LFSMetaObject.
func GetLFSMetaObjectByOid(ctx context.Context, repoID int64, oid string) (*LFSMetaObject, error) {
if len(oid) == 0 {
return nil, ErrLFSObjectNotExist
}
m := &LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}, RepositoryID: repoID}
has, err := db.GetEngine(ctx).Get(m)
if err != nil {
return nil, err
} else if !has {
return nil, ErrLFSObjectNotExist
}
return m, nil
}
// RemoveLFSMetaObjectByOid removes a LFSMetaObject entry from database by its OID.
// It may return ErrLFSObjectNotExist or a database error.
func RemoveLFSMetaObjectByOid(ctx context.Context, repoID int64, oid string) (int64, error) {
return RemoveLFSMetaObjectByOidFn(ctx, repoID, oid, nil)
}
// RemoveLFSMetaObjectByOidFn removes a LFSMetaObject entry from database by its OID.
// It may return ErrLFSObjectNotExist or a database error. It will run Fn with the current count within the transaction
func RemoveLFSMetaObjectByOidFn(ctx context.Context, repoID int64, oid string, fn func(count int64) error) (int64, error) {
if len(oid) == 0 {
return 0, ErrLFSObjectNotExist
}
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return 0, err
}
defer committer.Close()
m := &LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}, RepositoryID: repoID}
if _, err := db.DeleteByBean(ctx, m); err != nil {
return -1, err
}
count, err := db.CountByBean(ctx, &LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
if err != nil {
return count, err
}
if fn != nil {
if err := fn(count); err != nil {
return count, err
}
}
return count, committer.Commit()
}
// GetLFSMetaObjects returns all LFSMetaObjects associated with a repository
func GetLFSMetaObjects(ctx context.Context, repoID int64, page, pageSize int) ([]*LFSMetaObject, error) {
sess := db.GetEngine(ctx)
if page >= 0 && pageSize > 0 {
start := 0
if page > 0 {
start = (page - 1) * pageSize
}
sess.Limit(pageSize, start)
}
lfsObjects := make([]*LFSMetaObject, 0, pageSize)
return lfsObjects, sess.Find(&lfsObjects, &LFSMetaObject{RepositoryID: repoID})
}
// CountLFSMetaObjects returns a count of all LFSMetaObjects associated with a repository
func CountLFSMetaObjects(ctx context.Context, repoID int64) (int64, error) {
return db.GetEngine(ctx).Count(&LFSMetaObject{RepositoryID: repoID})
}
// LFSObjectAccessible checks if a provided Oid is accessible to the user
func LFSObjectAccessible(ctx context.Context, user *user_model.User, oid string) (bool, error) {
if user.IsAdmin {
count, err := db.GetEngine(ctx).Count(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
return count > 0, err
}
cond := repo_model.AccessibleRepositoryCondition(user, unit.TypeInvalid)
count, err := db.GetEngine(ctx).Where(cond).Join("INNER", "repository", "`lfs_meta_object`.repository_id = `repository`.id").Count(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
return count > 0, err
}
// ExistsLFSObject checks if a provided Oid exists within the DB
func ExistsLFSObject(ctx context.Context, oid string) (bool, error) {
return db.GetEngine(ctx).Exist(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
}
// LFSAutoAssociate auto associates accessible LFSMetaObjects
func LFSAutoAssociate(ctx context.Context, metas []*LFSMetaObject, user *user_model.User, repoID int64) error {
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
sess := db.GetEngine(ctx)
oids := make([]any, len(metas))
oidMap := make(map[string]*LFSMetaObject, len(metas))
for i, meta := range metas {
oids[i] = meta.Oid
oidMap[meta.Oid] = meta
}
if !user.IsAdmin {
newMetas := make([]*LFSMetaObject, 0, len(metas))
cond := builder.In(
"`lfs_meta_object`.repository_id",
builder.Select("`repository`.id").From("repository").Where(repo_model.AccessibleRepositoryCondition(user, unit.TypeInvalid)),
)
err = sess.Cols("oid").Where(cond).In("oid", oids...).GroupBy("oid").Find(&newMetas)
if err != nil {
return err
}
if len(newMetas) != len(oidMap) {
return fmt.Errorf("unable collect all LFS objects from database, expected %d, actually %d", len(oidMap), len(newMetas))
}
for i := range newMetas {
newMetas[i].Size = oidMap[newMetas[i].Oid].Size
newMetas[i].RepositoryID = repoID
}
if err = db.Insert(ctx, newMetas); err != nil {
return err
}
} else {
// admin can associate any LFS object to any repository, and we do not care about errors (eg: duplicated unique key),
// even if error occurs, it won't hurt users and won't make things worse
for i := range metas {
p := lfs.Pointer{Oid: metas[i].Oid, Size: metas[i].Size}
_, err = sess.Insert(&LFSMetaObject{
Pointer: p,
RepositoryID: repoID,
})
if err != nil {
log.Warn("failed to insert LFS meta object %-v for repo_id: %d into database, err=%v", p, repoID, err)
}
}
}
return committer.Commit()
}
// CopyLFS copies LFS data from one repo to another
func CopyLFS(ctx context.Context, newRepo, oldRepo *repo_model.Repository) error {
var lfsObjects []*LFSMetaObject
if err := db.GetEngine(ctx).Where("repository_id=?", oldRepo.ID).Find(&lfsObjects); err != nil {
return err
}
for _, v := range lfsObjects {
v.ID = 0
v.RepositoryID = newRepo.ID
if err := db.Insert(ctx, v); err != nil {
return err
}
}
return nil
}
// GetRepoLFSSize return a repository's lfs files size
func GetRepoLFSSize(ctx context.Context, repoID int64) (int64, error) {
lfsSize, err := db.GetEngine(ctx).Where("repository_id = ?", repoID).SumInt(new(LFSMetaObject), "size")
if err != nil {
return 0, fmt.Errorf("updateSize: GetLFSMetaObjects: %w", err)
}
return lfsSize, nil
}
// IterateRepositoryIDsWithLFSMetaObjects iterates across the repositories that have LFSMetaObjects
func IterateRepositoryIDsWithLFSMetaObjects(ctx context.Context, f func(ctx context.Context, repoID, count int64) error) error {
batchSize := setting.Database.IterateBufferSize
sess := db.GetEngine(ctx)
id := int64(0)
type RepositoryCount struct {
RepositoryID int64
Count int64
}
for {
counts := make([]*RepositoryCount, 0, batchSize)
sess.Select("repository_id, COUNT(id) AS count").
Table("lfs_meta_object").
Where("repository_id > ?", id).
GroupBy("repository_id").
OrderBy("repository_id ASC")
if err := sess.Limit(batchSize, 0).Find(&counts); err != nil {
return err
}
if len(counts) == 0 {
return nil
}
for _, count := range counts {
if err := f(ctx, count.RepositoryID, count.Count); err != nil {
return err
}
}
id = counts[len(counts)-1].RepositoryID
}
}
// IterateLFSMetaObjectsForRepoOptions provides options for IterateLFSMetaObjectsForRepo
type IterateLFSMetaObjectsForRepoOptions struct {
OlderThan timeutil.TimeStamp
UpdatedLessRecentlyThan timeutil.TimeStamp
OrderByUpdated bool
LoopFunctionAlwaysUpdates bool
}
// IterateLFSMetaObjectsForRepo provides a iterator for LFSMetaObjects per Repo
func IterateLFSMetaObjectsForRepo(ctx context.Context, repoID int64, f func(context.Context, *LFSMetaObject, int64) error, opts *IterateLFSMetaObjectsForRepoOptions) error {
var start int
batchSize := setting.Database.IterateBufferSize
engine := db.GetEngine(ctx)
type CountLFSMetaObject struct {
Count int64
LFSMetaObject `xorm:"extends"`
}
id := int64(0)
for {
beans := make([]*CountLFSMetaObject, 0, batchSize)
sess := engine.Table("lfs_meta_object").Select("`lfs_meta_object`.*, COUNT(`l1`.oid) AS `count`").
Join("INNER", "`lfs_meta_object` AS l1", "`lfs_meta_object`.oid = `l1`.oid").
Where("`lfs_meta_object`.repository_id = ?", repoID)
if !opts.OlderThan.IsZero() {
sess.And("`lfs_meta_object`.created_unix < ?", opts.OlderThan)
}
if !opts.UpdatedLessRecentlyThan.IsZero() {
sess.And("`lfs_meta_object`.updated_unix < ?", opts.UpdatedLessRecentlyThan)
}
sess.GroupBy("`lfs_meta_object`.id")
if opts.OrderByUpdated {
sess.OrderBy("`lfs_meta_object`.updated_unix ASC")
} else {
sess.And("`lfs_meta_object`.id > ?", id)
sess.OrderBy("`lfs_meta_object`.id ASC")
}
if err := sess.Limit(batchSize, start).Find(&beans); err != nil {
return err
}
if len(beans) == 0 {
return nil
}
if !opts.LoopFunctionAlwaysUpdates {
start += len(beans)
}
for _, bean := range beans {
if err := f(ctx, &bean.LFSMetaObject, bean.Count); err != nil {
return err
}
}
id = beans[len(beans)-1].ID
}
}
// MarkLFSMetaObject updates the updated time for the provided LFSMetaObject
func MarkLFSMetaObject(ctx context.Context, id int64) error {
obj := &LFSMetaObject{
UpdatedUnix: timeutil.TimeStampNow(),
}
count, err := db.GetEngine(ctx).ID(id).Update(obj)
if count != 1 {
log.Error("Unexpectedly updated %d LFSMetaObjects with ID: %d", count, id)
}
return err
}