// 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 os import ( "bufio" "regexp" "strings" "github.com/coreos/clair/worker/detectors" ) var ( lsbReleaseOSRegexp = regexp.MustCompile(`^DISTRIB_ID=(.*)`) lsbReleaseVersionRegexp = regexp.MustCompile(`^DISTRIB_RELEASE=(.*)`) ) // AptSourcesOSDetector implements OSDetector and detects the OS from the // /etc/lsb-release file. type LsbReleaseOSDetector struct{} func init() { detectors.RegisterOSDetector("lsb-release", &LsbReleaseOSDetector{}) } // Detect tries to detect OS/Version using "/etc/lsb-release" // Necessary for Ubuntu Precise for instance func (detector *LsbReleaseOSDetector) Detect(data map[string][]byte) (OS, version string) { f, hasFile := data["etc/lsb-release"] if !hasFile { return } 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] } } } } return } // GetRequiredFiles returns the list of files that are required for Detect() func (detector *LsbReleaseOSDetector) GetRequiredFiles() []string { return []string{"etc/lsb-release"} }