60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
// 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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"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 redhatReleaseRegexp = regexp.MustCompile(`(?P<os>[^\s]*) (Linux release|release) (?P<version>[\d]+)`)
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// RedhatReleaseOSDetector implements OSDetector and detects the OS from the
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// /etc/centos-release, /etc/redhat-release and /etc/system-release files.
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type RedhatReleaseOSDetector struct{}
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func init() {
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detectors.RegisterOSDetector("redhat-release", &RedhatReleaseOSDetector{})
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}
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// Detect tries to detect OS/Version using "/etc/centos-release", "/etc/redhat-release" and "/etc/system-release"
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// Typically for CentOS and Red-Hat like systems
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// eg. CentOS release 5.11 (Final)
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// eg. CentOS release 6.6 (Final)
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// eg. CentOS Linux release 7.1.1503 (Core)
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func (detector *RedhatReleaseOSDetector) Detect(data map[string][]byte) (OS, version string) {
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for _, filePath := range detector.GetRequiredFiles() {
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f, hasFile := data[filePath]
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if !hasFile {
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continue
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}
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r := redhatReleaseRegexp.FindStringSubmatch(string(f))
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if len(r) == 4 {
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OS = strings.ToLower(r[1])
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version = r[3]
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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 *RedhatReleaseOSDetector) GetRequiredFiles() []string {
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return []string{"etc/centos-release", "etc/redhat-release", "etc/system-release"}
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}
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