a3a37072b5
This removes the previous behaviour from tarutil to do simple prefix matching. All places where the previous prefix-based matches were specified have been updated to use a regexp instead, maintaining previous behaviour.
99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
// Copyright 2017 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 lsbrelease implements a featurens.Detector for container image
|
|
// layers containing an lsb-release file.
|
|
//
|
|
// This detector is necessary for detecting Ubuntu Precise.
|
|
package lsbrelease
|
|
|
|
import (
|
|
"bufio"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"github.com/coreos/clair/database"
|
|
"github.com/coreos/clair/ext/featurens"
|
|
"github.com/coreos/clair/ext/versionfmt/dpkg"
|
|
"github.com/coreos/clair/ext/versionfmt/rpm"
|
|
"github.com/coreos/clair/pkg/tarutil"
|
|
)
|
|
|
|
var (
|
|
lsbReleaseOSRegexp = regexp.MustCompile(`^DISTRIB_ID=(.*)`)
|
|
lsbReleaseVersionRegexp = regexp.MustCompile(`^DISTRIB_RELEASE=(.*)`)
|
|
)
|
|
|
|
type detector struct{}
|
|
|
|
func init() {
|
|
featurens.RegisterDetector("lsb-release", "1.0", &detector{})
|
|
}
|
|
|
|
func (d detector) Detect(files tarutil.FilesMap) (*database.Namespace, error) {
|
|
f, hasFile := files["etc/lsb-release"]
|
|
if !hasFile {
|
|
return nil, nil
|
|
}
|
|
|
|
var OS, version string
|
|
|
|
scanner := bufio.NewScanner(strings.NewReader(string(f)))
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
|
|
r := lsbReleaseOSRegexp.FindStringSubmatch(line)
|
|
if len(r) == 2 {
|
|
OS = strings.Replace(strings.ToLower(r[1]), "\"", "", -1)
|
|
}
|
|
|
|
r = lsbReleaseVersionRegexp.FindStringSubmatch(line)
|
|
if len(r) == 2 {
|
|
version = strings.Replace(strings.ToLower(r[1]), "\"", "", -1)
|
|
|
|
// We care about the .04 for Ubuntu but not for Debian / CentOS
|
|
if OS == "centos" || OS == "debian" {
|
|
i := strings.Index(version, ".")
|
|
if i >= 0 {
|
|
version = version[:i]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Determine the VersionFormat.
|
|
var versionFormat string
|
|
switch OS {
|
|
case "debian", "ubuntu":
|
|
versionFormat = dpkg.ParserName
|
|
case "centos", "rhel", "fedora", "amzn", "ol", "oracle":
|
|
versionFormat = rpm.ParserName
|
|
default:
|
|
return nil, nil
|
|
}
|
|
|
|
if OS != "" && version != "" {
|
|
return &database.Namespace{
|
|
Name: OS + ":" + version,
|
|
VersionFormat: versionFormat,
|
|
}, nil
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (d *detector) RequiredFilenames() []string {
|
|
return []string{"^etc/lsb-release"}
|
|
}
|