github.com/google/osv-scalibr@v0.4.1/detector/endoflife/linuxdistro/ubuntu.go (about)

     1  // Copyright 2025 Google LLC
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package linuxdistro
    16  
    17  import (
    18  	"bufio"
    19  	"time"
    20  
    21  	scalibrfs "github.com/google/osv-scalibr/fs"
    22  )
    23  
    24  type ubuntuReleaseSupport struct {
    25  	standard time.Time
    26  	pro      time.Time
    27  	legacy   time.Time
    28  }
    29  
    30  func rdate(year int, month time.Month) time.Time {
    31  	return time.Date(year, month, 1, 0, 0, 0, 0, time.UTC)
    32  }
    33  
    34  // From https://ubuntu.com/about/release-cycle
    35  var ubuntuReleases = map[string]ubuntuReleaseSupport{
    36  	"25.04": {
    37  		standard: rdate(2026, time.January),
    38  		pro:      time.Time{},
    39  		legacy:   time.Time{},
    40  	},
    41  	"24.10": {
    42  		standard: rdate(2025, time.July),
    43  		pro:      time.Time{},
    44  		legacy:   time.Time{},
    45  	},
    46  	"24.04": {
    47  		standard: rdate(2029, time.April),
    48  		pro:      rdate(2034, time.April),
    49  		legacy:   rdate(2036, time.April),
    50  	},
    51  	"22.04": {
    52  		standard: rdate(2027, time.April),
    53  		pro:      rdate(2032, time.April),
    54  		legacy:   rdate(2034, time.April),
    55  	},
    56  	"20.04": {
    57  		standard: rdate(2025, time.May),
    58  		pro:      rdate(2030, time.April),
    59  		legacy:   rdate(2032, time.April),
    60  	},
    61  	"18.04": {
    62  		standard: rdate(2023, time.May),
    63  		pro:      rdate(2028, time.April),
    64  		legacy:   rdate(2030, time.April),
    65  	},
    66  	"16.04": {
    67  		standard: rdate(2021, time.April),
    68  		pro:      rdate(2026, time.April),
    69  		legacy:   rdate(2028, time.April),
    70  	},
    71  	"14.04": {
    72  		standard: rdate(2019, time.April),
    73  		pro:      rdate(2024, time.April),
    74  		legacy:   rdate(2026, time.April),
    75  	},
    76  }
    77  
    78  // See https://ubuntu.com/about/release-cycle
    79  func ubuntuEOL(osRelease map[string]string, fs scalibrfs.FS) bool {
    80  	id, ok := osRelease["VERSION_ID"]
    81  	if !ok {
    82  		return false
    83  	}
    84  	if release, ok := ubuntuReleases[id]; ok {
    85  		if isUbuntuLegacy(fs) {
    86  			return release.legacy.Before(now())
    87  		}
    88  		if isUbuntuPro(fs) {
    89  			return release.pro.Before(now())
    90  		}
    91  		return release.standard.Before(now())
    92  	}
    93  	return false
    94  }
    95  
    96  func isUbuntuPro(fs scalibrfs.FS) bool {
    97  	// We could also check '/var/lib/ubuntu-advantage/status.json'
    98  	f, err := fs.Open("/etc/apt/sources.list.d/ubuntu-esm-infra.sources")
    99  	if err != nil {
   100  		return false
   101  	}
   102  	defer f.Close()
   103  	scanner := bufio.NewScanner(f)
   104  	if scanner.Scan() {
   105  		return scanner.Text() == "# Written by ubuntu-pro-client"
   106  	}
   107  	return false
   108  }
   109  
   110  func isUbuntuLegacy(fs scalibrfs.FS) bool {
   111  	// TODO(#889): Implement.
   112  	return false
   113  }