fb32dcfa58
Main Clair logic is changed in worker, updater, notifier for better adapting ancestry schema. Extensions are updated with the new model and feature lister and namespace detector drivers are able to specify the specific listers and detectors used to process layer's content. InRange and GetFixedIn interfaces are added to Version format for adapting ranged affected features and next available fixed in in the future. Tests for worker, updater and extensions are fixed.
94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
// Copyright 2017 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package apk implements a featurefmt.Lister for APK packages.
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package apk
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import (
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"bufio"
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"bytes"
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log "github.com/sirupsen/logrus"
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"github.com/coreos/clair/database"
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"github.com/coreos/clair/ext/featurefmt"
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"github.com/coreos/clair/ext/versionfmt"
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"github.com/coreos/clair/ext/versionfmt/dpkg"
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"github.com/coreos/clair/pkg/tarutil"
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)
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func init() {
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featurefmt.RegisterLister("apk", dpkg.ParserName, &lister{})
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}
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type lister struct{}
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func (l lister) ListFeatures(files tarutil.FilesMap) ([]database.Feature, error) {
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file, exists := files["lib/apk/db/installed"]
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if !exists {
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return []database.Feature{}, nil
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}
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// Iterate over each line in the "installed" file attempting to parse each
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// package into a feature that will be stored in a set to guarantee
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// uniqueness.
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pkgSet := make(map[string]database.Feature)
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ipkg := database.Feature{}
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scanner := bufio.NewScanner(bytes.NewBuffer(file))
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for scanner.Scan() {
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line := scanner.Text()
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if len(line) < 2 {
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continue
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}
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// Parse the package name or version.
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switch {
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case line[:2] == "P:":
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ipkg.Name = line[2:]
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case line[:2] == "V:":
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version := string(line[2:])
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err := versionfmt.Valid(dpkg.ParserName, version)
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if err != nil {
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log.WithError(err).WithField("version", version).Warning("could not parse package version. skipping")
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} else {
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ipkg.Version = version
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}
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case line == "":
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// Restart if the parser reaches another package definition before
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// creating a valid package.
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ipkg = database.Feature{}
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}
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// If we have a whole feature, store it in the set and try to parse a new
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// one.
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if ipkg.Name != "" && ipkg.Version != "" {
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pkgSet[ipkg.Name+"#"+ipkg.Version] = ipkg
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ipkg = database.Feature{}
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}
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}
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// Convert the map into a slice and attach the version format
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pkgs := make([]database.Feature, 0, len(pkgSet))
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for _, pkg := range pkgSet {
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pkg.VersionFormat = dpkg.ParserName
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pkgs = append(pkgs, pkg)
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}
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return pkgs, nil
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}
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func (l lister) RequiredFilenames() []string {
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return []string{"lib/apk/db/installed"}
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}
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