76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
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// Copyright 2015 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 os
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import (
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"bufio"
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"regexp"
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"strings"
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"github.com/coreos/clair/worker/detectors"
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)
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var (
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lsbReleaseOSRegexp = regexp.MustCompile(`^DISTRIB_ID=(.*)`)
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lsbReleaseVersionRegexp = regexp.MustCompile(`^DISTRIB_RELEASE=(.*)`)
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)
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// AptSourcesOSDetector implements OSDetector and detects the OS from the
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// /etc/lsb-release file.
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type LsbReleaseOSDetector struct{}
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func init() {
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detectors.RegisterOSDetector("lsb-release", &LsbReleaseOSDetector{})
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}
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// Detect tries to detect OS/Version using "/etc/lsb-release"
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// Necessary for Ubuntu Precise for instance
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func (detector *LsbReleaseOSDetector) Detect(data map[string][]byte) (OS, version string) {
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f, hasFile := data["etc/lsb-release"]
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if !hasFile {
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return
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}
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scanner := bufio.NewScanner(strings.NewReader(string(f)))
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for scanner.Scan() {
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line := scanner.Text()
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r := lsbReleaseOSRegexp.FindStringSubmatch(line)
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if len(r) == 2 {
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OS = strings.Replace(strings.ToLower(r[1]), "\"", "", -1)
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}
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r = lsbReleaseVersionRegexp.FindStringSubmatch(line)
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if len(r) == 2 {
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version = strings.Replace(strings.ToLower(r[1]), "\"", "", -1)
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// We care about the .04 for Ubuntu but not for Debian / CentOS
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if OS == "centos" || OS == "debian" {
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i := strings.Index(version, ".")
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if i >= 0 {
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version = version[:i]
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}
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}
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}
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}
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return
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}
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// GetRequiredFiles returns the list of files that are required for Detect()
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func (detector *LsbReleaseOSDetector) GetRequiredFiles() []string {
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return []string{"etc/lsb-release"}
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}
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