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Test if container blob is accessible before mounting (#22759) (#25783)

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Backport #22759 by @KN4CK3R

related #16865

This PR adds an accessibility check before mounting container blobs.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
Giteabot 2023-07-09 09:00:59 -04:00 committed by GitHub
parent 53276d3e49
commit 5bfe469821
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 72 additions and 8 deletions
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46
models/packages/package_blob.go
View File

@ -5,11 +5,18 @@ package packages
import (
"context"
"strconv"
"time"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/perm"
"code.gitea.io/gitea/models/unit"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
"xorm.io/builder"
)
// ErrPackageBlobNotExist indicates a package blob not exist error
@ -98,3 +105,42 @@ func GetTotalUnreferencedBlobSize(ctx context.Context) (int64, error) {
Where("package_file.id IS NULL").
SumInt(&PackageBlob{}, "size")
}
// IsBlobAccessibleForUser tests if the user has access to the blob
func IsBlobAccessibleForUser(ctx context.Context, blobID int64, user *user_model.User) (bool, error) {
if user.IsAdmin {
return true, nil
}
maxTeamAuthorize := builder.
Select("max(team.authorize)").
From("team").
InnerJoin("team_user", "team_user.team_id = team.id").
Where(builder.Eq{"team_user.uid": user.ID}.And(builder.Expr("team_user.org_id = `user`.id")))
maxTeamUnitAccessMode := builder.
Select("max(team_unit.access_mode)").
From("team").
InnerJoin("team_user", "team_user.team_id = team.id").
InnerJoin("team_unit", "team_unit.team_id = team.id").
Where(builder.Eq{"team_user.uid": user.ID, "team_unit.type": unit.TypePackages}.And(builder.Expr("team_user.org_id = `user`.id")))
cond := builder.Eq{"package_blob.id": blobID}.And(
// owner = user
builder.Eq{"`user`.id": user.ID}.
// user can see owner
Or(builder.Eq{"`user`.visibility": structs.VisibleTypePublic}.Or(builder.Eq{"`user`.visibility": structs.VisibleTypeLimited})).
// owner is an organization and user has access to it
Or(builder.Eq{"`user`.type": user_model.UserTypeOrganization}.
And(builder.Lte{strconv.Itoa(int(perm.AccessModeRead)): maxTeamAuthorize}.Or(builder.Lte{strconv.Itoa(int(perm.AccessModeRead)): maxTeamUnitAccessMode}))),
)
return db.GetEngine(ctx).
Table("package_blob").
Join("INNER", "package_file", "package_file.blob_id = package_blob.id").
Join("INNER", "package_version", "package_version.id = package_file.version_id").
Join("INNER", "package", "package.id = package_version.package_id").
Join("INNER", "user", "`user`.id = package.owner_id").
Where(cond).
Exist(&PackageBlob{})
}

22
routers/api/packages/container/container.go
View File

@ -203,17 +203,25 @@ func InitiateUploadBlob(ctx *context.Context) {
Digest: mount,
})
if blob != nil {
if err := mountBlob(&packages_service.PackageInfo{Owner: ctx.Package.Owner, Name: image}, blob.Blob); err != nil {
accessible, err := packages_model.IsBlobAccessibleForUser(ctx, blob.Blob.ID, ctx.Doer)
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
setResponseHeaders(ctx.Resp, &containerHeaders{
Location: fmt.Sprintf("/v2/%s/%s/blobs/%s", ctx.Package.Owner.LowerName, image, mount),
ContentDigest: mount,
Status: http.StatusCreated,
})
return
if accessible {
if err := mountBlob(&packages_service.PackageInfo{Owner: ctx.Package.Owner, Name: image}, blob.Blob); err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
setResponseHeaders(ctx.Resp, &containerHeaders{
Location: fmt.Sprintf("/v2/%s/%s/blobs/%s", ctx.Package.Owner.LowerName, image, mount),
ContentDigest: mount,
Status: http.StatusCreated,
})
return
}
}
}

12
tests/integration/api_packages_container_test.go
View File

@ -34,6 +34,7 @@ func TestPackageContainer(t *testing.T) {
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
session := loginUser(t, user.Name)
token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeReadPackage)
privateUser := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 31})
has := func(l packages_model.PackagePropertyList, name string) bool {
for _, pp := range l {
@ -262,7 +263,16 @@ func TestPackageContainer(t *testing.T) {
t.Run("UploadBlob/Mount", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
req := NewRequest(t, "POST", fmt.Sprintf("%s/blobs/uploads?mount=%s", url, unknownDigest))
privateBlobDigest := "sha256:6ccce4863b70f258d691f59609d31b4502e1ba5199942d3bc5d35d17a4ce771d"
req := NewRequestWithBody(t, "POST", fmt.Sprintf("%sv2/%s/%s/blobs/uploads?digest=%s", setting.AppURL, privateUser.Name, image, privateBlobDigest), strings.NewReader("gitea"))
req = AddBasicAuthHeader(req, privateUser.Name)
MakeRequest(t, req, http.StatusCreated)
req = NewRequest(t, "POST", fmt.Sprintf("%s/blobs/uploads?mount=%s", url, unknownDigest))
addTokenAuthHeader(req, userToken)
MakeRequest(t, req, http.StatusAccepted)
req = NewRequest(t, "POST", fmt.Sprintf("%s/blobs/uploads?mount=%s", url, privateBlobDigest))
addTokenAuthHeader(req, userToken)
MakeRequest(t, req, http.StatusAccepted)