mirror of
https://github.com/goharbor/harbor.git
synced 2024-09-27 13:02:59 +02:00
96 lines
2.6 KiB
Go
96 lines
2.6 KiB
Go
// Copyright 2018 Project Harbor Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package filter
|
|
|
|
import (
|
|
"net/http"
|
|
"regexp"
|
|
|
|
"github.com/astaxie/beego/context"
|
|
"github.com/goharbor/harbor/src/common/utils/log"
|
|
"github.com/goharbor/harbor/src/core/config"
|
|
)
|
|
|
|
const (
|
|
repoURL = `^/api/repositories/((?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)+)(?:[a-z0-9]+(?:[._-][a-z0-9]+)*)$`
|
|
tagsURL = `^/api/repositories/((?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)+)tags$`
|
|
tagURL = `^/api/repositories/((?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)+)tags/([\w][\w.-]{0,127})$`
|
|
labelURL = `^/api/repositories/((?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)+)tags/([\w][\w.-]{0,127})/labels/[0-9]+$`
|
|
)
|
|
|
|
// ReadonlyFilter filters the deletion or creation (e.g. retag) of repo/tag requests and returns 503.
|
|
func ReadonlyFilter(ctx *context.Context) {
|
|
filter(ctx.Request, ctx.ResponseWriter)
|
|
}
|
|
|
|
func filter(req *http.Request, resp http.ResponseWriter) {
|
|
if !config.ReadOnly() {
|
|
return
|
|
}
|
|
|
|
if matchRepoTagDelete(req) || matchRetag(req) {
|
|
resp.WriteHeader(http.StatusServiceUnavailable)
|
|
_, err := resp.Write([]byte("The system is in read only mode. Any modification is prohibited."))
|
|
if err != nil {
|
|
log.Errorf("failed to write response body: %v", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// matchRepoTagDelete checks whether a request is a repository or tag deletion request,
|
|
// it should be blocked in read-only mode.
|
|
func matchRepoTagDelete(req *http.Request) bool {
|
|
if req.Method != http.MethodDelete {
|
|
return false
|
|
}
|
|
|
|
if inWhiteList(req) {
|
|
return false
|
|
}
|
|
|
|
re := regexp.MustCompile(tagURL)
|
|
s := re.FindStringSubmatch(req.URL.Path)
|
|
if len(s) == 3 {
|
|
return true
|
|
}
|
|
|
|
re = regexp.MustCompile(repoURL)
|
|
s = re.FindStringSubmatch(req.URL.Path)
|
|
if len(s) == 2 {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// matchRetag checks whether a request is a retag request, it should be blocked in read-only mode.
|
|
func matchRetag(req *http.Request) bool {
|
|
if req.Method != http.MethodPost {
|
|
return false
|
|
}
|
|
|
|
re := regexp.MustCompile(tagsURL)
|
|
return re.MatchString(req.URL.Path)
|
|
}
|
|
|
|
func inWhiteList(req *http.Request) bool {
|
|
re := regexp.MustCompile(labelURL)
|
|
s := re.FindStringSubmatch(req.URL.Path)
|
|
if len(s) == 3 {
|
|
return true
|
|
}
|
|
return false
|
|
}
|