clair/ext/featurefmt/rpm/rpm.go

121 lines
3.6 KiB
Go
Raw Normal View History

2017-01-13 07:08:52 +00:00
// Copyright 2017 clair authors
2015-11-13 19:11:28 +00:00
//
// 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.
2017-01-13 23:49:02 +00:00
// Package rpm implements a featurefmt.Lister for rpm packages.
package rpm
2015-11-13 19:11:28 +00:00
import (
"bufio"
"io/ioutil"
"os"
"strings"
"github.com/coreos/pkg/capnslog"
2015-11-13 19:11:28 +00:00
"github.com/coreos/clair/database"
2017-01-13 23:49:02 +00:00
"github.com/coreos/clair/ext/featurefmt"
"github.com/coreos/clair/ext/versionfmt"
"github.com/coreos/clair/ext/versionfmt/rpm"
2017-01-13 07:08:52 +00:00
"github.com/coreos/clair/pkg/commonerr"
2017-01-13 23:49:02 +00:00
"github.com/coreos/clair/pkg/tarutil"
2015-11-13 19:11:28 +00:00
"github.com/coreos/clair/utils"
)
2017-01-13 23:49:02 +00:00
var log = capnslog.NewPackageLogger("github.com/coreos/clair", "ext/featurefmt/rpm")
2017-01-13 23:49:02 +00:00
type lister struct{}
2015-11-13 19:11:28 +00:00
func init() {
2017-01-13 23:49:02 +00:00
featurefmt.RegisterLister("rpm", &lister{})
2015-11-13 19:11:28 +00:00
}
2017-01-13 23:49:02 +00:00
func (l lister) ListFeatures(files tarutil.FilesMap) ([]database.FeatureVersion, error) {
f, hasFile := files["var/lib/rpm/Packages"]
2015-11-13 19:11:28 +00:00
if !hasFile {
return []database.FeatureVersion{}, nil
2015-11-13 19:11:28 +00:00
}
// Create a map to store packages and ensure their uniqueness
packagesMap := make(map[string]database.FeatureVersion)
2015-11-13 19:11:28 +00:00
// Write the required "Packages" file to disk
tmpDir, err := ioutil.TempDir(os.TempDir(), "rpm")
defer os.RemoveAll(tmpDir)
if err != nil {
log.Errorf("could not create temporary folder for RPM detection: %s", err)
2017-01-13 07:08:52 +00:00
return []database.FeatureVersion{}, commonerr.ErrFilesystem
2015-11-13 19:11:28 +00:00
}
err = ioutil.WriteFile(tmpDir+"/Packages", f, 0700)
if err != nil {
log.Errorf("could not create temporary file for RPM detection: %s", err)
2017-01-13 07:08:52 +00:00
return []database.FeatureVersion{}, commonerr.ErrFilesystem
2015-11-13 19:11:28 +00:00
}
// Query RPM
// We actually extract binary package names instead of source package names here because RHSA refers to package names
// In the dpkg system, we extract the source instead
out, err := utils.Exec(tmpDir, "rpm", "--dbpath", tmpDir, "-qa", "--qf", "%{NAME} %{EPOCH}:%{VERSION}-%{RELEASE}\n")
if err != nil {
log.Errorf("could not query RPM: %s. output: %s", err, string(out))
// Do not bubble up because we probably won't be able to fix it,
// the database must be corrupted
return []database.FeatureVersion{}, nil
2015-11-13 19:11:28 +00:00
}
scanner := bufio.NewScanner(strings.NewReader(string(out)))
for scanner.Scan() {
line := strings.Split(scanner.Text(), " ")
if len(line) != 2 {
// We may see warnings on some RPM versions:
// "warning: Generating 12 missing index(es), please wait..."
continue
}
// Ignore gpg-pubkey packages which are fake packages used to store GPG keys - they are not versionned properly.
if line[0] == "gpg-pubkey" {
continue
}
// Parse version
version := strings.Replace(line[1], "(none):", "", -1)
err := versionfmt.Valid(rpm.ParserName, version)
2015-11-13 19:11:28 +00:00
if err != nil {
log.Warningf("could not parse package version '%s': %s. skipping", line[1], err.Error())
continue
}
// Add package
pkg := database.FeatureVersion{
Feature: database.Feature{
Name: line[0],
},
Version: version,
}
packagesMap[pkg.Feature.Name+"#"+pkg.Version] = pkg
2015-11-13 19:11:28 +00:00
}
// Convert the map to a slice
packages := make([]database.FeatureVersion, 0, len(packagesMap))
2015-11-13 19:11:28 +00:00
for _, pkg := range packagesMap {
packages = append(packages, pkg)
}
return packages, nil
}
2017-01-13 23:49:02 +00:00
func (l lister) RequiredFilenames() []string {
2015-11-13 19:11:28 +00:00
return []string{"var/lib/rpm/Packages"}
}