clair/worker/detectors/namespace/redhatrelease/redhatrelease.go

60 lines
1.9 KiB
Go

// Copyright 2015 clair 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 redhatrelease
import (
"regexp"
"strings"
"github.com/coreos/clair/database"
"github.com/coreos/clair/worker/detectors"
)
var redhatReleaseRegexp = regexp.MustCompile(`(?P<os>[^\s]*) (Linux release|release) (?P<version>[\d]+)`)
// RedhatReleaseNamespaceDetector implements NamespaceDetector and detects the OS from the
// /etc/centos-release, /etc/redhat-release and /etc/system-release files.
//
// Typically for CentOS and Red-Hat like systems
// eg. CentOS release 5.11 (Final)
// eg. CentOS release 6.6 (Final)
// eg. CentOS Linux release 7.1.1503 (Core)
type RedhatReleaseNamespaceDetector struct{}
func init() {
detectors.RegisterNamespaceDetector("redhat-release", &RedhatReleaseNamespaceDetector{})
}
func (detector *RedhatReleaseNamespaceDetector) Detect(data map[string][]byte) *database.Namespace {
for _, filePath := range detector.GetRequiredFiles() {
f, hasFile := data[filePath]
if !hasFile {
continue
}
r := redhatReleaseRegexp.FindStringSubmatch(string(f))
if len(r) == 4 {
return &database.Namespace{Name: strings.ToLower(r[1]) + ":" + r[3]}
}
}
return nil
}
// GetRequiredFiles returns the list of files that are required for Detect()
func (detector *RedhatReleaseNamespaceDetector) GetRequiredFiles() []string {
return []string{"etc/centos-release", "etc/redhat-release", "etc/system-release"}
}